"...we suffer more in imagination than in reality." Seneca, probably.
Here are some pictures that show that area of the Pro Series on Glock 17 and P320 version.
I received my PRO holster a few days after they were released. I opted not to use any of the provided hardware and had a newer set of Mod 4's that DCC sent me to try out.
There were a few inquiries on various forms of social media inquiring about the thickness of the holster, so I took a photo to show the difference between a Henry Holsters Flint for a G17 and the PHLster PRO also for a G17.
Probably not silly. Based on how many people I see that have trouble assembling their Enigmas for left hand usage (the demo video just says to reverse everything for left hand use) I'd wager that not everyone's minds are wired to easily figure out how to mirror image specific actions.