I'm in the process of dipping my toe into the red dot waters - Langdon has the slide for one of my PX4s and a Holosun 507c is on its way to me. I've been using a JMCK IWB 3 for the PX4s, but I contacted Tony and he told me that the standard holster won't work if modified for the red dot since it sits too low. My instinct is to just order another IWB 3 set up for a red dot but wanted to check the hive mind to see if there are possible issues that might arise with the pistol carried at about 3-3:30.
I know the default answer for a lot of folks will be to go AIWB. I'm 69 and don't really want to reprogram decades worth of neural pathways at this point in time...which isn't the same as "no".