I like shoulder hosters too. I have been toying with a vest system from
but haven't gotten one yet.
If you haven't done a search here, and google you should. I have liked the Miami Classic, from reading about them. Wide shoulder straps are good, narrow is bad, all day comfort wise. I have an Uncle Mikes vertical shoulder holster for my S&W .44 mag and after wearing it all day it bites my shoulders.
You're aware of horizontal, under the arm pit, and vertical close to the side and usually attched to the belt, and dressing accordingly and how your physical activity will affect whats hanging under your arm.
The name brands are a safe bet and they have so many different kinds of leather you can get what suits you. There is most likely going to be a wait. I have some holsters from El Passo Saddlery http://www.epsaddlery.com/default.aspx
and like them, especially their floral carving.
I'm waiting for a holster from Andrews Leather. http://www.andrewsleather.com/traditional.htm
They look good and have the style I was looking for.
I'm and outdoors kind of guy and live in bush Alaska so my types of rigs are geared accordingly, over coats and or with backpacks.
Hope this helps.