I got a holster/case combination from the Verizon store last December when I first got my phone. The case features a kickstand that works in both portrait and landscape orientation.
Note that the slider on this sort of case doesn't seem to hold up to lots of use (based on similar cases that I've had for past phones; this one is fine because I never use that feature).
I'm not sure if you'd consider it 'thin' or 'slim' but it's fine for me.