Having used a toilet with an air dryer I will say it worked, although toilet paper is far quicker.

It is kind of nice to have hot air blown up your ass though.

Hand dryers are very efficient! They don't seem to do anything for the first ~20 seconds, but in the last 5 seconds you feel all the water evaporating. That's because only the water surface evaporates, until your skin is exposed dry. You are probably like most people who I see use them in public bathroom, using them only for <10 seconds.

When using hand dryer, spread the moist all over your hands as if you were washing them. It isn't instant, but they sure work well.

Tried the Dyson ones? They're amazing.