Classy is nice. I personally aren´t much for the leathergear but I do wear a thick leather wristband every day cause I like the feel and look of it.
A collar for play is completely different than one that is used for everyday use in my opinion anyways. If I had wanted a collar for my girl then it would be a nice thin either steel or leather one with a nice lock in the back. I definitely like the subtle look of one like those.
On the other hand I do love a heavy leather collar for play.