No answer huh? typical for umberto. .. I guess I'll ask FS2crew
Maybe you wanted to say:
"I know it's typical for Umberto to reply at all times of the day, in all time-zones, during Week-ends, Christmas and New Years Eve so, why hasn't he replied yet to my Saturday's message yet, is he sick perhaps ?"
No, I'm not sick, but I haven't got the chance to really check that product but, in general, since GSX doesn't do anything on its own unless you explicitly call it, there shouldn't be any issues using it together with anything else, especially something that, as far as I know, basically does just pushback, so it won't probably interfere with GSX in Automatic servicing mode, since Pushback is never called automatically even in that mode.