No I haven't. I've been meaning to look into that, but so far I've just been using arc.el. If you know anything about getting arc to work with slime, and have any success in that area, I'd be interested.
i actually use Vim which is more than sufficient for my needs. what i'm thinking of making is a completely noob-oriented IDE, one where ideally the user does not even have to know about mzscheme this or arc3.tar that