I have also suffered with PF I love Birkenstocks and they are great at relieving PF but I have only tried the toe post versions. I have umpteen pairs and where them in the house as slippers (as my feet can get especially sore when going from laying down or sitting down to walking about).
I e got the Arizona’s. They’re super comfy and GReAT for PF, which I also have. Apparently lots of people find them hard to break in/adjust to due to the Moulded footbed but I’ve always found them comfy from first wear
I have PF and my Birkenstocks are great for it. I too wear a pair as slippers. I have the Arizona's, the narrow ones and had to size down half a size. I've always had the suede ones which are softer than the leather ones and no trouble to break in. There are some with a soft foot bed which I have found to be even better for PF.
I have dreadful feet and have had many pairs of Arizonas and Taboras and never had to do any wearing in. I think its important that they fit properly though. A lot of people say to size down but if you do, make sure your foots fits inside the footbed. If any of your foot is resting on the edge they won't be comfortable.