Only time I see it might make a difference is if you are hanging up side down in a tree.
A PF works just as well upside down or in any other direction. The CRF advantage is in a much more rugged extraction and ejection system. That only comes into play when the rifle is abused or used in extremely harsh dirty conditions or with out of spec ammo.
I prefer CRF, and there is no downside to not getting a rifle with it. But I also have several PF rifles I like quite well.