As another Floridian (just back from Chicago for 14 months), I would echo all of the above comments. For me, my feet are what gets hot first. I rarely wear anything but sandals or flip flops unless it is really cold. I have 4 SWK's (Nightstalker, Black Shadow HW, Green Shadow HW, and Weathered Lamont HW), and 4 USAK's (3 casual, 1 semi-trad) and one more on order. I can tell you that hands down if it is above 60, I am almost alwasy in a USAK, unless I am wearing one made myself! PV is awesome stuff in the heat. UK's are pretty good too.

Just my 2 cents.