i use one. space saver to not have a box, but it comes with a few sacrafices. no channel guide (could use one of those tvguide channel scrolling guides though), and no in-demand (ppv). the good thing is though my tv has channel preview (can watch another show in a little box and decide to switch over) and some channels are labeled with what the name of the show/movie is. but yeah, cant wait for that v2 card.
edit: btw, the cards are very picky on what tv they can work with. this is according to the installer, he said its dicey on certain brands/models.