Hey JKB, as far as the bike, I have used a LWB recumbent with a pusher trailer, the same bike with front hub and the battery on the rear rack, a tadpole trike with a pusher trailer, and the same tadpole setup with a mid-drive and battery on the rear rack.
At one ride I had the motor pretty well covered with coroplast (see current avatar). But the different variations didn't really make much difference, and I prefer to leave things more or less exposed so anyone interested can see how it works. I always pedal, because I like to and it helps keep me in shape, and since I ride with pedal only friends many aren't even aware I can cheat.
I remember one day I went ahead up a steep hill and passed several decked out road bikers. A little later while stopped to rest my buddy overheard one of them say "what's up with the old guy on the recumbent with the lunch box on the rack?". I don't think they knew it was electric assist and probably thought those 'bents really can charge up the hills.
Most of the rides have been either 50 miles or metric centuries. Haven't had an occasion to assist anyone outside of the friends I ride with. So far the bike or trike has always completed the ride without problems except for having to let the controller cool a few times on the old brushed setup.
And you bet we stop for the goodies at the rest stops.