I'm a wine glass snob, and completely agree that thick glass or plastic are generally unacceptable. We did find some nice acrylic stemware that we use on our boat, where glass just doesn't make sense in any way. You could easily pack those in your suitcase without fear of breakage. I got ours at Costco, but I'm sure you can find them elsewhere.

Also, I wouldn't hesitate to pack glass in my carry-on bag, stuffed with and surrounded by clothing.