In terms of leather, I'd check with Lou Alessi. There are a few other custom leather makers out there who make a similar level of quality but I have only personally dealt with Lou (people absolutely rave about the Milt Sparks operation). He'll tell you fast yes or no. He made the holster in which I carry my M8 and I will go to him when and if I decide to carry my new PSP (congrats by the way!).
Hope this helps a bit. I'd like to hear what you find.
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Best,
- Jawper