There's no instory evidence that they DIDN'T get new costumes.
Ehhhh ... that's a slippery slope.
"Replacement armor" is an assumption that someone on these boards came up with twenty years after the comics were published. It's not a reasonable reading of the issues themselves. Yes, it COULD HAVE HAPPENED -- but we generally only assume wacky BTS costume-switch stuff like that when there's simply no other way to make the comics work as presented.
we don't KNOW if Claremont intended this to be the original armor or replacement armor.
However, since "replacement armor" is NEVER stated or alluded to in ANY comic, it's probably a much safer assumption that this was not Claremont's intent, no?
a reasonable person cannot assume that Claremont intended there to be a weeks long gap in the middle of Wolverine 7 or X-Men 232-234.
Obviously not. And I don't think I said that I thought that WAS his intent. It looks like a straightforward screw-up, to me. He was writing a Wolvie story set in the recent past ... but accidentally used the present-day Hulk status quo.
So, yes, creating a gap "violates his intent", just as assuming replacement armor. But it keeps the spirit of his story intact -- albeit with a lot of stuff shoveled between pages -- whereas "replacement armor" kind of takes the wind out of that plot point's sails.
Fixing this basically boils down to two ways: mucking with Coy and taking pages out of sequence -- or assuming that for some reason, even though the rest of the X-Men eventually reverted to normal after Inferno, Psylocke required new armor.
(Please note: the X-Men's changes weren't just limited to costume alterations. Wolvie's claws lengthened, jaw distended and he grew fangs ... Longshot's luck powers were tainted and his eye glowed black. These changes went away eventually. One can reasonably assume that all the other changes did too -- like Psylocke's armor reverting to normal.)
I'm leaning back towards mucking with Coy. It IS an oddity that Claremont started telling the armor's origin story months after the armor was introduced, but it looks to me like that was indeed what he was trying to do. We should try to make that work, I think.
-Jeph!