I thought about trying the same thing after DLing Long Shot! If I can figure out how to successfully transfer crews, that is.
I think I'm doing things right; I start in Long Shot, select active dock, open lock, switch to DGIV, open locks, select crewmember, press EVA, and it says the crew has transferred to the docked ship( Long Shot), but I always end up with the ummu'ed crewmember in the airlock area, invisible from external view and unable to re-enter either ship.
---------- Post added at 05:35 PM ---------- Previous post was at 05:32 PM ----------
Well, that post was supposed to go into the thread about your using Cosmos to push Celestium3 to Mars!