Hi Exhale, and wecome to the fold.
Weyalan covered the major points.
I have Volvo
folders that were already on my boat
when I acquired it. Prior to this, always planning to have either feathering or folders on whatever cat I ended up with, I had a bias to feathering props. Reverse thrust that would tend to make the prop fold in upon itself seemed to be a huge performance contradiction to me. But the first time I backed down my (future) boat
on the sea trial I became a believer in folders - at least Volvo
folders. Very impressive reverse performance. Somehow, they work
Some claim that folders in forward are better than feathering in forward, because they more closely mimic fixed prop geometry (in forward). Maybe, maybe not. Feathering props in reverse are claimed by some to be better even than fixed props in reverse because their geometry in reverse better mimics fixed props in forward. (Fixed props are typically designed to be better in forward for obvious reasons.) In other words, forward & reverse geometry of featherers can be identical - neither being optimum.
Just consider this a data point that claims that folders do not (cannot) perform in reverse may be exaggerations. As Weyalan noted, featherers should be better in reverse - and should even be better in reverse than fixed props. If I ever need to replace my props I'd consider all comers as you apparently are. Good luck.