That's a terrible, terrible, response.
'Save Often'. Well, I'm not like most, in that I don't like to use 'Save Abuse'.
Fact of the matter is, you see the armor as any other set of armor in the game, it has stats and a look to it. There is nothing indicated when you put it on that it suddenly 'makes you hostile' to them. On top of that, given that I just worked with the damn hunters to kill the mofo that dropped the armor to begin with, AND saved everyone that was in the party with me, to me it seems that wearing the armor wouldn't make you hostile towards them.
It autosaves twice, and really, honestly, I had no idea why I was suddenly being attacked. It took me looking it up (as I said in the OP) to figure out what the hell was happening.
All they have to do is add one line to the description, in red, like all the other negative traits show:
"When worn, causes hostilities with Camp Hathor"
EDIT: I see from your other posts that you literally add nothing to other discussions, other than pointing out to 'save more often' or rail on someone for a decision they made. Keep it classy.