Well, you didn't SAY you were lefthanded and Blade Tech does not show their cheap molded holster in left.
What I would do is try on the Uncle Mike "hip" holster and see if it left daylight visible through the belt loops or if it left more than a 3/4" gap between some part of the gun and your torso. If it did neither, I would get it. If it does not pass the IDPA requirements, try the Paddle which is more likely to. I do not really like the U.M. Paddle, because it rides too high to suit me.
The best approach, if the "hip" holster does not pass IDPA requirements, is the Headhunter Conversion in which you unscrew its separate belt bracket at the bottom, put the screws back into the holster only, and hang the belt bracket over your waistband like a paddle. Better hang, not as high ride.