I was thinking that, too, before I bought the $38 Amazon special referenced in other comments below. To get heated water, I'd have to run wiring and an outlet, and...oh, screw it, try it without the heat and if it's not acceptable I'll buy a better one and do the electrical work.
phhhhht, it's fine, and I'm glad I didn't go to the trouble. It's a nice-to-have, but not worth tearing apart drywall to run wiring, IMO. OTOH, if you have an outlet in a convient-to-reach location (e. g., under the toilet), then YOLO.