Upload & Sell: Off
Well, it might sound lame, but while i'm learning (and i'm still in the early stages) i kinda get a kick out of doing as much as possible in-camera and as little as possible in post. The way i see it, post is an art in itself, and a whole other can of worms I want to see how far the camera will take me, and also learn about all the aspects of it, to be able to use it to its full potential. That said, pretty much all of my pictures go through Lightroom, and inevitably all get some sort of treatment (noise, exposure, crop, etc...)
The multi-exposure is a lot more fun doing in camera. At least when playing around, and when you don't have to produce tons and tons of them for some work assignment. It is true, though, that using photoshop one can achieve far better results if time permits. and it's a lot more flexible...
For me, at this point - i just want to learn as much as i can about using the actual camera as possible.
As far as your FE experience - i remember a few accidental multiple exposure pictures we used to take back in the day, and those always stood out. Too bad i wasn't into photography then... would've been even more fun (both - camera and post in the actual dark room)