Mine is in a Bobro extended.  Plenty of clearance over both Troy and Arms BUIS.  I believe the Bobro extended is a little higher (only by a tenth of an inch or so) than the slightly forward mount, but I doubt you'll have any problems unless your BUIS are really high.

One thing I found with my 2.5-10 PST is that although the illumination is almost invisible in bright conditions, it's more than adequate when the sun drops a bit.  I use this scope for hunting coyotes when most of my time afield is late afternoon or during the night.  When me eyes get used to the changing (dropping) light conditions, I find I don't need to dial up the reticule near as much.

For me, this seems like a no-brainer.  During the bright hours, you don't really need illumination.  Unless the reticule of the 1-4 is only visible under power...  I see no issue.  I'll be dropping one on my other CQC (close quarters coyote) rifle as soon as the funds become available...  AND I can find a mil/mil version.

In my eyes....  Another touchdown for Vortex!!  As always...  YMMV.

(Now if my 4-16 would finally ship I'd be doing back flips!!  Which...  Says a lot about this old fart.   )