[simply Nathan]

I personally never use Luck.

I never put it on any characters I played because it was on my GM's list of traits forbidden for being too cinematic, and I wouldn't really have wanted it anyway. I don't want to be looking at a clock and waiting for the cooldown on a trait like this.

X uses per session or X uses per in-game whenever would be preferable for me even if it was less even in distribution - especially then, actually, because luck tends to come in streaks. I still wouldn't take it much and usually hoard my lucky breaks for defensive use.

I did make it a mandatory trait on some character templates I made a few years ago because of constantly reading how "Luck is mandatory on action heroes" on this very forum. I don't really feel it.

I would use it in a heartbeat years before I'd permanently expend points for success though.