Colonel Littleton has a vertical leather case for $105.00 shipped domestically. Tan or black leather.
I bought one and feel it's not ready for prime time. It could use a redesign and I might pen a note to them.
1.) The belt slot should be a belt loop so that a fat belt does not impose upon the opposite side of the leather where the phone is situated.
2.) The closing method employs a metal ball stud that the leather flap pushed onto. While I don't mind that method because I am used to it with my UK-made Billingham camera bags and enjoy its quiet action, Billingham are largely fabric and finger nails don't dig into it. Colonel Littleton's case is all leather and fingernails dig into it.
I purposely stretched the case where the belt goes into and that's helped a bit. And to fix the fingernail digging, I'll replace my present solution of 2 inch worth of black gaffer's tape with genuine manta ray skin. I'll get the skin and have it glued right in the spot where it will take all the fingernail abuse with aplomb.
One of the reasons I'm making the case work for me is that it is kind to nice clothing. I had a less costly case from Amazon that had a steel belt clip with a rotation to it. While strong, it would eventually eat away at my jeans and make toast out of my dress pants. So back that went.