It's not worth it even with all those fine functionalities, it's so damn slow you're better off using the functions already available in photoshop even if they're not as ergonomic. Oh and I've yet to see that speed increase in 2.0 (IT's A TRAP §)
Thanks for answers - you don't waste your money. This picker is more than this simple tool from cs5. You got not that control how in magicpicker. Version 2.0 is out by the way - but upgrade cost 7 $ :( I ask the producer if he can put this function in. It will coming with 2.1.