I stretch and frame, no glass, for the traditional painting look. Framah's right -- giclee canvas will sag, even if you stretch the hell out of it. At least, the cotton stuff I'm using sags.* I'm going to try some mixed fiber canvas and see how that holds up.
I don't have the equipment to dry mount giant canvases yet, although there is a market in used presses around here. Business will warrant it sometime this year, I expect.
I also, however, doing more tapestry mounts, especially for very large vertically oriented prints. It's an unusual look and is well received wherever I show it. Also has the advantage of being extremely portable: just roll it up. I get a little edge curl, which isn't too objectionable but I'm still working on ways of reducing it -- probably, again, trying that mixed fiber canvas will help.
* Typically what happens is that after a few months it goes from the tight drum to a sort of floppy one, but has no wrinkles or visual flaws.