I find it amusing that all of the posts complaining about how short the initial post is, are all short "twitter-like" posts themselves.
It's nice to see that Haunter takes what most dismiss as a "pointless" thread, and adds some substance to it. I appreciate that he doesn't just whine and complain, and leads by example. Perhaps the forums would have less "pointless" threads if more people approached the forums in the way he approached this thread.
Anyway, Dark Witness, I'm curious to see your handling. Do you perhaps have a video of said handling, or could you make one (note that you'll score bonus points for filming it for a live audience)?
In any case, I believe the card in the pocket seems more organic and natural. It just makes sense to put a card in your pocket--that's where I would put anything else if I was temporarily not using it (although, admittedly, not in my back pocket, but that is only because I don't usually have anything as flat as a card with me). As well, it makes sense as far as the trick is concerned in that it keeps the card temporary out of play, so the focus remains on what you are currently doing--if the card were out on the table, it would be potentially tempting the audience, drawing their focus away from what you are doing.
Hence, I would love to see your handling for an actual audience, to see how it goes.
