Mike, my thought exactly. I did have some curved glass made years ago for a project. I was nice but expensive.
Making the curved fronted straight backed rabbeted and mitered glass stop was tricky. I couldn't figure out how to cut the curved rabbet on such a small delicate little piece of molding. What I finally did was start with an un-rabbeted piece and then cut about 3/16" of the curve off. I then ripped the back piece down in thickness then glued the little curved piece back on.
Bret