Long runtime non-tube/boxy keychain flashlights for pocket carrying?

Welcome to BLF!

I have found that items at the bottom of my pocket can be super annoying so I really like to use clips like this example: Clip for Convoy. That's a bit customized but the Convoy clip is good and you may use you S2+.

I find that a rounded object is better for fuss free ingress and egress. I do have a squarish microtool that is attached to a pocket hanger.