Ok. I got a solid hour in on the summit after updating. Had plenty of time tinkering with it at the store and at knobcon, but it's so much better to finally have at home.
The midi channels on multi-mode are sort of a pain to deal with, but given it's a 2-part deal, I can see why certain things are set up the way they are. Only downside is that when I'm sending ch1 from hydrasynth to summit while in multi, it doesn't respond to AT or mod wheel. Only when controlling just part A or part B: then AT and mod wheel control from hydra work.
sounds incredible. This one's a keeper.