Glock did make a few with a thumb safety.
I had no idea. I bought my daughter a Shield because she's more comfortable with the thumb safety. She was still a teenager at the time (we were shooting USPSA) and carrying a 26. I'm fine carrying a round chambered (+1, you know) in my 43. Haven't shot myself yet, but if it had been an option when the 43 came out, I would probably have gone with it.
.. and, as this is a PICTURE thread: