I ask because I had this set-up on my 19 for about a year, and shot well with it in GSSF. That simple "bucket" rear sight was easy to pick up in daylight, and I also had the night sight front sight for low light self-defense scenarios. I know this probably wasn't ideal for either situation, but it seemed a good balance for my needs. Then, like a fool, I couldn't leave it alone and put a rear night sight on as well. (Front and rear now both new trijicons and excellent night visibility.) I think I shot better with the standard & night sight front set-up, during the day anyhow. Anyone else have/used to have/thinking about having this set-up on their Glock and would like to share your experience?