I would have responded before now, but I've been....busy.... I can't believe that I've never experimented with this stuff before.
For django, I'm with you. The swart, all by itself, with just a single guitar input (split internally as you say) will take you all sorts of fun places. Just a single channel of the Swart is the best tweed tone I've ever experienced. Add the stereo, and the split reverb / trem, and you can get beautiful old school tones.
For Les though, I'm misusing the term stereo for most of my orgy of sound here over the last couple of days. I'm just talking dirt stupid stuff. Couple of amps, with distinct tones by themselves, plugged in to a stereo cab, and the blend is great. Rockerverb + DG30...unbelievable. 2061x + Archon....amazing. MDT + Two Rock ODS....to die for. I'm sure that this will get old eventually (I assume so...since I don't see tons of people gigging around here using two separate heads into a stereo cab).
Oh well... I think I'll combine a GA40 with a 2 channel C next and see where that nets me... If you guys don't hear from me in a couple of days, send for help. It probably means that I forgot to eat and am passed out on the floor.