I did, regretted it- but I had to go down to metal because the old paint was so damaged, and most of my issues were down to bad adhesion on the magnesium alloy, even with an etch primer. If you’ve got good paint then that’s a non-issue.
Bike forks get a pretty hard time so you’ll need to get a very sturdy finish, what clear are you thinking? I don’t think singlepack is tough enough tbh, or at least the one I used (upol I think, not 100%) wasn’t, but I’ve been using acrylics for the first time recently and though it scratches pretty easily it seems harder to chip. Haven’t used it on any really hard used parts but I’m pleasantly surprised
Or o’course you can get 2k aerosols, or you might have a gun, who knows? But even then, I kind of draw the line at cyanide 🙂