Not really. You won't have to 'learn all over'. Training is a continuing act that has a begining and no end. You can learn on the PTS if that is what you are set on. It has been done many times before. Crawl, walk, run. Most of us it seems suggest the Arrow over the PTS, but get the PTS if that is all that will please your hunger for aviation. More importantly, talk with an instructor and see what they are more comfortable training you on. And while you're out at the field, maybe someone will have a PTS or a high wing trainer and a buddy box who is nice enough to let you see what it feels like.