I ride an 03 Roadking with the stock windshield, I'm a Roadking man, bondified, fortified, certified.
Last year I invested in the HD heated Jacket Liner and the HD heated gauntlet leather gloves. By using these dudes and multi layers: long johns, denim, and full leathers (leather pants not chaps), and that thingy you put over your head to keep my "jowels" warm, I'm good to go. 13 degrees is the coldest that I have ridin'. I do recommend the heated jacket liner and gloves. Pretty user friendly for the most part.
Before I started using these my hands would get cold at about 35 degrees, even when wearing H-D heavy gauntlet gloves with glove liners....no more!
When the salt is put down, I submit to keeping the scoot off of the salt laden roads. That white dust gets all over your bike and when you put it in the garage unwashed, condensation can set in (my gargage is drafty) the condensation mixed with the white salty dust turns into an acid and and corrode big time.!!!!!!!!!!!!!!!!!!!!!! Messed up some mags on my 97 RK years ago doing that.