I've had two Harleys over seven years and racked up many tens of thousands of miles on them. The last one was sold in 2007. I used them both in the winter months, no heated grips fitted. It's just a bit labour intensive keeping them look good.
I'd be amazed if you could protect a Harley when salt is on the road without it taking a lifetime to clean and polish it.
Share your wisdom though I'm eager to learn!