A SOB holster w/ a thumb break will probably end up being more of a PITA than it's worth. Especially if you are going to be doing a lot of practice drawing and reholstering.
You're going to end up cursing that thumb break.
Trust me on that.
Take a look at the SOB2 by Horseshoe Leather in GB. It is so well boned to the firearm (and the leather is such high quality) that a retention strap is totally unnessary.
I'm sure that you can get it in a Lefty version since each holster is individually made to order. OR you might want to look at his SUB2 where the belt itself sort of acts as an added retention...though I have no personal experience with that model.
Anyway Here is the link to Horseshoe Leather Click Here
