A buddy of mine has the electric floor heat in his 2000 American Dream - they love it! It's even enough to keep the coach warm on a chilly morning (but you have to turn it on well before you get out of bed, or leave it on real low overnight).
A bachelor guy I know has it in his Country Coach. He says he can press his wrinkled pants by laying them on the floor and putting some books on top. The warmth + the flat book-weight does the trick. Not sure if that is fact or just his camp fire story, though.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL