I'd like this feature, even if I can't see how it could be simple.

btw Arne: as a workaround, I've set another disconnected LW on a different computer and tuned to a different port that shares just my test magnets. I can see running multiple LW's this way. In Panther, each LW could be on a different user to keep the preferences and ports separate.

I wonder if a single LW could have separate preference files for each folder.