I always rinse the brush well, squeeze dry, and then squeeze dry while wrapped in a dry towel. I've never hung any of them and they all seem to be doing well. I read that you should never shake a brush by Gary Young of Simpson Brush family fame.
If you find yourself in possession of some cool rack designed to hang brushes give it a go but I wouldn't waste money or shelf space with one.
Hydro-magic Injector, assorted straights
Commodore X3 2-band, Vintage AS2M, Thater 4125/1, 2010 B&B Custom Boar, #33 B&B Limited Edition RV, Wee Scott
Pilot Vanishing Point, Waterman Expert II, Esterbrook J in Blue and Orange, Sheaffer's Admiral Snorkel, TWSBI ROC 100