Has anybody tried player-tracked individual torch timers?

I'm aware of the rules for multiple torches in the core book. It doesn't make literal sense but it makes things easier to track for the GM. But couldn't indvidual players track their own torches? Assuming your players are honest and remember to keep track of them it seems like a sensible solution. One less thing for the GM to keep track of as well. Has anybody tried it? What was your experience?