The Griot's Garage gloves are very good. They do not cut down a significant amount of vibration, but they do enough to make a difference.
I use them on every job with my Boss G15 and Flex 3401. They work well for orbitals, but my Flex rotary tools vibrate in such a way that even my super thick vibration-reducing gloves (not from Griot's or Auto Geek) do little to diminish the negative effect of prolonged use.
In regard to keeping the gloves on to do other work, like wiping off compound residue and such, I find no issue completing said task whilst wearing hand protection.
I did a few paint refinishing jobs right after getting the Griot's gloves and they seemed to just be "okay." On the next job I neglected to wear them at all and felt a big difference.