TL:DR - Good bike path commuter wheel / transit wheel, needs silicone, usable in winter but expect limited range and grooving to music on wheel is possible and preferable.
Decided to ride it all winter and it was capable, even able to get up ice slick inclines with a little slipping. 16x2.125 tires are not a particularly convenient size and I have yet to find a studded version. Used in air temperatures as low as -35C (-30F) and the wheel handled it pretty well.
Range in Winter: 10-15km with 85kg (187 lb) rider plus at least 20 lbs of clothing/backpacks, highly dependent on air temperature but not trying to software limit speed (which results in constant beeping and tilt back making for a miserable riding experience). Fall was about 20km so not much difference.
Water ingress: Strongly recommend adding silicone, especially inside the wheel well where the case joins. A small crack or defect formed on the underside near the light and some salty water got in and damaged the light. The motherboard has a partial gasket under the cover but needs silicone around the wire holes just in case the outer shell cracks. Inmotion says don't use it in any wet conditions, not realistic for most areas in Canada.
Ride: Great dry carving maneuverability and can easily take tight corners at high and low speed. Great stability and comfort with lower tire pressure (needed for winter) but know the road/curbs to avoid rim damage and possible fall as an unseen pothole or curb will send a jolt through wheel into your body. Pushed through snow fine, survived most ice if you ride with confidence. Wheel gets range bonus on higher pressure but doesn't ride as straight likely due to the smaller contact point or perhaps just poor rider technique.
Speed: On bike paths: more than enough. On city/local streets (30-50km/h) / alleys: Just about right. On stroads/roads/rural roads at 60+km/h: Not enough and will cause you discomfort. Wide roads make it feel like you are traveling super slow and drivers will pass you at very high speeds, probably very close, and possibly with a lot of honking/yelling.
Emergency Handling: Braking is responsive, easy to maneuver around obstacles or make a quick 90 degree to avoid something. Seems to want to keep the rider on the wheel and the light weight makes grip recovery easier.
Quality of build: It's ok. Plastic shell is likely to crack over time requiring replacement (especially replace on the motherboard side [right] if a crack appears). Pedals are layered but the other shell will definitely chip from pedal scrapes. Pedal hangers have Loctite attaching to the shell. Most bolts/screws appear to be rust resistant. Motor cover resists corrosion but it will occur over time so take the rotor out and clean it even if the tire doesn't need changing (especially during winter). I cover the power button with electrical tape.
Cleaning: Outside, is easy to wipe down, but has no components that really require that. Inside is a challenge. The motor needs to be removed and wiped down regularly (at least once a month and more if in areas that use salt in winter) or the cover will oxidize. The board radiator fins are inside wheel well and will collect lots of dirt that needs to be scrubbed out. There are a baffling number of plastic fins/compartments in the wheel well that will collect all kinds of debris.
Tire/tube change: Not fun, spoke-less rim and angled valve are difficult to work with. Probably worth paying someone else to do it with fancy tire tools. Angle valve is practical to fit under shell but limits buying options. Must remove connections from motherboard to remove rotor which means breaking the water sealing every time.
Pedestrians: Easily surprised if approached from behind, wheel is very quiet, probably carry a noise maker of some kind to warn them. Easy to maneuver around and doesn't usually cause them to panic at low speeds so sidewalks can be used in a pinch. Dogs can hear something about the wheel that grabs their attention early, so hopefully they are leashed and under control.
Bikes: Basically riding at in and around the same speeds as you can on the wheel, so no real issues here.
Cars/drivers: Extremely dangerous. Just like biking you must take the lane if riding on the street. Cars will pass too close and risk of a right hook or left hook is exponential otherwise (have a close call at least once a day when riding on the right side of the road that have only been avoided because of being alert to surroundings). This will anger the drivers and will result in them honking / yelling for the likely very slight inconvenience to their time as the now ingrained "get out of my way" belief of road use is very evident.
Dancing: Yep, do it.. its fun.. arms are free to move and carving to the beat is a blast.
Conclusion: Good wheel for the price, would recommend especially to new users or bike path commuters but put some silicone on it to prevent water ingress and check ...