Who knows? Maybe test it out?
I modded my hip firing/opening shot trust with free hand grip yesterday but how can i really test it?Is there a way to see with facts/stats if they actually stack together ? Any thoughts?
The easiest way to tell (and its a bit late) would to have taken a screenshot before and after to see the reticle size from the hip. You'll still get the "stickiness" of the aim assist from the hip even if the spread was unchanged. As well as the handling, for what hipfire handling is worth.