I don't think it's the worst subclass out there, but it's just not as good offensively?
I get the impression it's a more mobile fighter with some ways of being hit less and a couple tricks up their sleeve. I don't think there's some secret multiclass synergy to it. Itemization, yes, it *is* still a fighter.
There's always a subclass that's second or third best. Compared to other weaker subclasses out there, it's still really good if you invest in mobility spells.
(The problem is of course that a monk will always be better than the eldritch knight at the eldritch knight's job, but you can say that about many builds. It can be a fun class that feels good to play. It has a lot of flavour. It's pretty decent, just not OP).
