In the pocket, by itself, mostly. Some jeans have a large enough coin pocket to put it in there, too.
Alternatively, it fits in most of the small flip-phone belt holsters, and leaves room for the OR Delrin Battery Carrier next to it. Works out nicely if you want holster carry.
Or, you could tie a good lanyard on it with a snap-clip on the end, and hang it from your belt loop on your pants.
I don't do as shorty as seen above (although I have pieces/parts) - I like the shorty tail, TL50s running a 18650 (or 2x18350s). I use a ripoffs holster - if you want the model number send me a PM and I will let you know the model # when I am home on the weekend.
2 TL50 setups with shorty zerorez tails & moddoolar heads shown in photo below;