I have been using carb cleaner on Glocks Gens 2&3 with no problems.
Course I also go after them with toothbrush and dish soap in hot water as well. There is no way a wipe down and Hopps is going to get all the crud out from a regular monthly training session...at least for me. It takes a soak and a good scrubbing for me to get them clean.
But...as others have stated there is differences in brands and chemical make up.
Carb Cleaner vs Brake cleaner: besides chemical power, as I understand them, carb cleaner can have an additive in it that can leave residue, brake cleaner is designed to dry and strip and not leave residue.

*I now use extreme caution though and actually, put on safety glasses, Once I had a small little splash get in my eye, It burned so bad, I thought I may have actually got a Chem burn, it did scare me!