The headband with the over-the-head additional strap is nice and secure. I’ve been head-down poking at things and it never came loose let alone fell off. It’s adjustable, so take the time to “get it right” and it’ll wear well.
Plus, unlike those with the hinged holders that get loose and flop around or even crack off pieces (even on expen$ive lights), this has 2 thick rubber loops that hold it in-place. Simplicity itself. Even lets you quickly pop it out and “palm” the light if you want to (which I do quite often, vs having the strap dangling).