I have a DUTY P07 in .40 S&W, with the rounded trigger and I like it fine.
I bought a P09 in 9MM next. The new style trigger isn't an issue and I don't really notice it feeling any different for me.
I bought a P09 in .40 S&W next and the new style trigger bit the snot out of my trigger finger. It was just uncomfortable to shoot after a couple magazines. I bought an old DUTY style rounded hammer and put in it and now I have no trigger bite issues with that gun.
Might just be me, but if it's painful to shoot it - why shoot it? Do what you have to in order to make the gun fit you, after all, it's yours.