Yeah, it will be interesting to see the changes - especially when price drops and a clean integrated designs become more prevalent. Currently you can only have one of those two, not both.
I've had a ball being the only one around with an ebike, on my stealth bike (doesn't look anything like an ebike). Mostly it just shocks cars that I can keep up with traffic on lower speed roads (well, the bike is faster if there are many turns). But clearly ebikes are quickly going to loose their rarity. They do take a skill level to ride at the 28mph range though. That is a concern.