The only downsides I could see to this is getting constantly pulled over by cops thinking this was an unlicensed scooter and not being able to take this on bike paths or through parks without getting screamed at by every other person on the path.
Tigcross do you ever get hassled for the bike because of how it looks?
It's funny, but I never have. It's been on the road for a year and a half, and not once have I been pulled over by the cops or hassled on a bike path. I think that the generator drive really helps with that. On many ebikes, pedaling becomes irrelevant at higher speeds so the rider stops pedaling, and then is seen by a cop going too fast. With the Electrom, I am always pedaling because my effort is always contributing relevant energy to the system, and as a result, anytime a cop sees me, I'm pedaling and that seems to make things ok (I don't really know as I've never asked a cop what was going through their head).
I don't use a lot of dedicated bike paths as my speed is a little too high for safety, but when I do, the narrow profile of the Electrom (it's widest part is the handlebars at 22 inches) allows me to blend easily with other users.
In general, people do notice the Electrom, but for all the right reasons. They thing it's fantastic and want one.