actually I think it would look better using copper plumbing.
Yes, it would--although then it would also require proper fitting, probably solder, a good deal of "rasping the rough edges with a half-round bastard", polish, and then a coat of some sort of lacquer or some such so that it didn't tarnish/corrode. It'd also cost a lot more and be harder to extend (since the PVC version just sort of slots together, you can upgrade it pretty easily--for example, the one I show in the instructable has since been upgraded by taking the tee that holds the razor, turning it sideways, connecting two more tees to the ends, and thus now holds two razors, my HD and my slant bar.
Still, I may try it in copper someday just for grins--I bet it WOULD actually look pretty cool (heh heh heh).