The Vertec style frame is neat, but i personally use the wrap around grip on my M9A3 as i occasionally ride the slide release down without it. It does give you a more vertical grip angle, but wont really alter LOP.
I agree with ya. I use the conversion grip on my M9A3 as well.
I will admit that the Vertec grip FEELs good in the hand. But, I Owned a Vertec when they first came out somewhere around 15 years ago. And, I tried my M9A3 with the basic grip before I used the conversion grip. I just don't shoot the gun nearly as well with the Vertec grip.