I worked at this for almost 24 horus straight, and I'm finally getting the hang of it.
It helps if you put a significant bend in the card before releasing it.
Yes, it can be done surrounded, hand size shouldn't be an issue, and YES this trick is more than worth it.
If you'd like, you can read my review on it here:
http://forums.theory11.com/showthread.php?t=559
Really? Wow, thats awesome! I still like their feel, but again, it feels almost like a regular deck...
Time well tell; we'll see what my final thoughts of them are later on!