@George,
That's another one I'd considered. Musically, it works, but I was concerned about the connotations of the word. Things like 'trample upon' and 'suppress' and such. Does it really carry these connotations so strongly or should I not worry over it?
I'd much prefer a two-syllable word and a more poetic one but I did find 'ambulant' and it's not a terrible fit, though that one seems more homely and I believe specifies walking rather than leaving it open for something more figurative (potentially floating I suppose). Perhaps there are other words for movement that I'm having trouble finding (or perhaps 'calcant' is fine).
Thanks again. You're being extremely helpful.