The default pushback is now there for my AI traffic(I have MY Traffic 2010) and it doesnt get in the way of the GSX pushback vehicle.
Yes, more or less.
It might not conflict everywhere, because we purposely made our Pushback starting at an angle, not in front of the airplane like the default one, but in some parking spots (depending on their size) they might still run into each other, and in some airports we customized, there wasn't really any other space left than put it in front of the airplane, so it will surely start on top of the default.
Of course, it's just something cosmetic, it doesn't really affects operations so, if that's ok for you, you can keep both. Of course, there's also penalty in fps if you have all your AI with their own pushback truck in front of them, that was another side benefit of the patching.