Incase has rolled out a new smart cover compatible case called Snap Case for iPad 2. It is a clear hardshell case that has openings for all the ports and controls so that never have to take it off your iPad once you clip it on. There are also three little grills for the speakers at the back.
Of course, since it is compatible with Snap Case, it has cutout on the side for connecting of smart cover. Compared to its competitors (solosmart iPad 2 case, , it retails at somewhat cheaper price (35 dollars) and is available now.