I'll give it a try during my next shave. I too live down South and the premise makes sense to me. On the flip side, I have public water and it never really gets all that cold anyway. It might be a tad chilly in the winter but nothing like the water from the well when I lived in NH!
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