Excellent, this makes sense. I like not having to take off the existing rear sight off the G34 slide, buy a new rear tall sight, re-zero the optic etc. etc. etc. I did go ahead and buy a 10 8 0.315" plain black front to mess around with on the G34, just so I can try shooting with a front sight and an optic, while I figure out what's the best way to turn my current non-MOS G48 into one with an optic. I can take that front sight off later, and maybe use it on a carry gun.
I let my wife shoot my G34+Holosun today.
Her reaction after this was pretty interesting. I may need more optics.