For shits and giggles, I tried traveling while bodyswapped with assistance from DFusion. Yes, that is precisely what it said NOT to do.
Everything was fine until I tried to turn back into the normal view. I found myself as a Starman (wtf? what's that) peasant next to another Starman peasant. I was carrying nothing. I looked around to find myself deep, DEEP underground, on a steep cliff 3 z-levels from what appeared to be the bottom of a somewhat circular 40+ z-level tube. I was like "WTF? Where would this even exist?". I ended up killing the peasant ally, and then jumping down to the bottom, killing myself.
The fact that I was at the bottom of an essentially bottomless pit was frightening. I don't know why.
This is the kind of thing I love about DF's procedural nature. It doesn't explode when you do something out of the ordinary. It accomodates.
It not the best option to travel as a body swap character expecting you to stay in that body. though one way to save your self from being teleported in the overworld it's I think sleeping in the body or swap back to the Bswap using someone that not your adventurer.
what I love about adventurer mode is the shear crazy stuff you get to do in it, you can befriend a dragon and watch him burn the lord of the land then resurrect said lord as a zombie pack mule.
strip naked and turn your self into a ghost and no-clip all the way down(haven't done that but the in-game conversation would be silly)
companion"adventurer why you naked?"
adventurer"I'm attempting to summon a Demon to help us!"
companion"!??!?"
adv.-no clips through several z levels-
companion " how he do that!?!?!"
adv. pulls up a 7 billion legged duck in shape of a man "hey his name is Lord quack and he is dying for adventurer!"