I have a freezer full of Provia 400X. I use it for night photography under moonlight. It took me forever to test it and get a rough idea of the reciprocity failure, and how to shoot it in a way where it just looks good. A lot the reason why it took so long is that it's sometimes overcast when the moon is out. It does a pretty good job of having exposure times that are only around a few minutes.
I shot a roll a while back it came out with a super expired look. It must have gotten left out of the freezer, because I shot another roll and it looked normal.
This has been the most painful film discontinuation for me.