As they mention in the review, I wouldn’t let the evade for 3T fool you - Jeanne d’Arc (Alter) (Berserker) isn’t going to have much staying power in long fights. Low HP, a 1k demerit (equal to 10% of her base HP), class disadvantage, and an evade spread out over 3T instead of just being 3 hits.
NP5 ST Berserker with good attack and steroids is still a godsend - she’ll do plenty of NP damage (120k ish maybe?) - those are serious numbers and quick to fire off bc of her 20% gauge. Buster for Merlin memes. Lacks the crit focus of her OG Alter self, and trades that for DoT in the form of Burns…but DoT isn’t a great gimmick to have. Her NP burn is significant though - 9k extra damage isn’t nothing by any means, but is still inferior to what a buffed Buster crit would do in 1 turn.
Like Ushi Assassin, I think her mats shouldn’t pose a problem for the majority of players. Gallstones are among the least needed Gold mat in my experience; only needs a small number of Pages and Shells; and 60 Magatamas.
Wouldn’t be surprised if a decent number of people Grail her - either out of love for character or need for a ST nuke with wide coverage.