I feel like I must be missing something very simple, which is why I'm posting in the newbie forum.

Is it possible to do a simple UV unwrap of a cube that has been scaled (so that the faces aren't square), and get UVs that are proportional to the faces, i.e. the only outcome that makes any sense?

Every tool I use creates arbitrarily proportioned UV faces which are useless to me. Why, Maya?

In a related question, is Ptex taking off in "the industry"? I don't get the sense that it is, and I can't figure out why.