I have the hard shell case with kickstand - its....ok. I like the kickstand a lot but you feel it quite a bit when holding the phone in your hand. I don't know if I'll leave the case on full time or just snap it on at night when using it as a bedside clock. Its a little easier to grip than the phone itself.
I also have the case with the kickstand. I actually like it better than the two other cases i have. I feels a bit thinner other than the part with the kickstand. Only one problem is sometimes it doesn't feel as snug as it should be on the phone. But still provides enough protection. I don't know why a kickstand isn't standard on all HTC products.