As far as the Piet Forton move goes, I don't do it anymore because I like the Jack Carpenter Pop-Out Production better. But back to the topic of fancy cuts and juggling.
I love fancy cuts and productions. I have come across both Brian Tudor tapes, and the Bucks Twins' video, book and lecture notes. I've even met all three of the mentioned individuals and they are very talented. I've been able to learn a good portion of their flourishes, and it has given me a lot of notoriety/credibility as someone knowledgeable about cards, card tricks & magic at the University at which I attend.
I'll shed some light on the pros and cons of being someone that is capable of doing things from the "Showoff"-esque repetoire.
-If you do a flourish and someone wants to see you do it again, you can do it again without thinking, "Oh my gosh, I'm not supposed to do the same trick twice." (On a side note, the two flourishes that I've been requested to do over and over is, "Springing the cards Upwards" see 'Showoff 2' for a visual, and the "Hofzinzer spread" see McBride's Card tapes for a visual.)
-It's also wonderful because you can practice a fancy cut or flourish in public because, like the first pro, there really is no secret to hide. You just don't want to screw up too badly and play 52 pick-up.
-If you practice/showoff in public, people will sometimes come up to you and want to see a card trick, instead of you going to them and trying to show them a card trick.
-Skill always lasts longer than trickery. Just this past Sunday, I was in a magic shop and the worker there was showing some parents some tricks they could do for their kids. The magician showed them the "fant-a-stic," and the parents were amazed and bought the trick. They found out how it was done, and were sorely disappointed that they wanted a refund. Of course they didn't get it (the refund that is).
-I saw a layman with a deck of cards, probably getting ready to play Bridge or some other card game, and he was fumbling with the Charlier Cut. I showed him the cut he was trying to do, and then also a few more cuts, and I became his "Daddy" for the evening.
-The only time they (other magicians) acknowledge you is in a discussion about whether or not it's magic or juggling, instead of how these 'exceptionally works of eye candy' can be used to further the performance of magic.
-When laymen see you with a deck of cards, they always want to show you a trick that they once learned a long time ago that they don't really remember, but they'll still do it for you anyways, until they get stuck in the middle and stop. Then they ask, "Do you know that one?"
-It takes a lot longer time to be able to master the Leno Cut than it is to learn a double-lift and master "Dr. Daley's Last Trick."
-You spend a lot of money on playing cards. (Thank goodness for Costco's Box of Bicycle cards)
-You spend a lot of time mastering a whole lot of flourishes, the number of tricks and routines that you can master become smaller and smaller.
I don't think that the perception of being someone with "quick" hands is a problem. All that you need to do is make your card "trick" part exceptionally fair, the way card magic is supposed to be done.