Put your OS on the SSD, and data on any regular hard drive. It doesn't make sense not to use the SSD as a boot drive. Just remember to move the pagefile to the data drive and disable hibernate (there is a microsoft fixit that will do it for you) or else you may end up with 2 10-15gb files on your SSD.
i dont care about booting up in 10 seconds, i care about using the ssd for programs that i will need the speed for my whole os on it will take up too much space, im more than likely not gonna turn my pc off much at all. the unreliability of ssds make me choose not to use it as my main drive.
my concern is the failure rate of the hybrid xt and wether or not its a good choice as my main drive.