Dear Steve;
I made an experience with Plastisol today. Plastisol has a rubber finish, not a plastic finish like the original Honda part, but visually is the same. I putted the lever 10 minutes on the oven, at 200 degrees, emerged the lever on Plastisol and more 10 minutes on the oven at the same temperature.
Here goes some pictures. I'll try other options like clear coats and post later.
Thanks.
Marcello