I have a don humus holster that I use , its only a slot holster as the barrel will protrude out of the bottom but my 27s and 66s and 19s and my GP100 all fit very nicely in it.
You NEED new leather. Look at Simply Rugged, Rob is top notch. Also, look at the vendors here. Bell Charter Oak is another great choice. And I understand Lobo Gun Leather is going to be available soon. I have a couple of holsters from when Ray was running the business and they can't be beat. The new owners have committed to keeping the same quality and if so you can't go wrong!