+1
I carry the Quark AA regular UI in the belt holster.
Yes I can clip it to a visor or cap, but never wear those.
Solution: I keep the black rubber Quark Finger Grip Accessory on the rear tail switch. It goes into the holster just fine (tail up).
It is a perfect tooth cushion for my front teeth when the need arises!! {You can bite the covered switch, or the rubber loop meant for the finger, but the later will make for a bouncy beam}
It also serves nicely for a secure hand grip as intended.
I will probably buy the Quark Prizm as well, but I will not have it and the headband handy unless I'm planning on hands free use like night time metal detecting or some planned project.
So you Quark users out there, pull that finger grip thing out of the packing box, and keep it on your light. Your teeth will thank you later. 😀