Try it! You might love it. I came from the opposite direction, took lessons in eventing all through high school and just recently got addicted to gymkhana with my Haflinger filly. I've been taking lessons in Western events from a friend, and feel like a better-rounded rider for it. And it's always fun to learn new things! If I were you, I'd try to find a friendly trainer with experience in both English and Western so they've got some perspective on where you're coming from. :)
Also, Puck is an awesome name, especially for a horse with such apparent energy. Best of luck with his healing period, and have fun with him!