I guess this falls under the umbrella of "common sense" to a lot of folks, but I just realized when holster shopping for my 5" Smith & Wesson M2.0 Pro Series 9mm that both (rather nice) thumb break holsters I have for my 4.6" Smith & Wesson M2.0 .45 4.6" work just fine. The nose sticks out about a quarter inch, that's it.
Just thought I'd post a thread to give someone else the chance to save a few hundred bucks like I just did.