Definitely a functional device, but I would just rather take my towel - which I use to rest my clubs on AND to wipe my hands and clean my ball. Even if I was using this, I would still need to grab my towel.
Wonder if people who won't use headcovers for their irons will use gripcovers. :wink:
For me, if I have to lay my putter down, I stick an EterniTee down and lay my putter handle on that. Keeps it propped up just enough to avoid getting wet or sand sticking to the grip.