Paddle holster question

[DoubleKCustomLeathercraft]

I got a call today for a paddle holster. I'm familiar with these, the paddle rides inside the pants instead of using a loop or clip. 

Is there anyone here that has any experience making a leather paddle? Do I just stitch leather onto a kydex or plastic paddle? Or do I use just leather, maybe skirting, and hardening it? 

I'll do some research on my own, but this is my first stop. I'd rather hear from someone that's done it than just looking at pictures and trying to guess

Thanks