Yes! My wife has pegged me with a glass dildo and it was pretty awesome. We'd already done pegging with rubber and cyberskin dildos. We we very careful at first, but then she seriously pounded me, once it was clear that I could take it.
The dildo we used is called the "Soft Pink Magnificent"; it's almost identical to the Awesome Blossom
, only it's pink and about 1/2" shorter. We used a stiff rubber O-ring. We still have the dildo, but I MUCH prefer realistic dildos.
I would advise caution to anyone who tries it with glass toys. As others have said, glass is completely rigid and could cause pain or injury if used carelessly. OUCH!