I do think INT requirements on items that have no stat bonuses is daft (honestly I think Sarongs should be wearable by anyone regardless of stats, I can't quite see the roleplaying going "you need to be intelligent enough to put the Sarong on properly")
A possible solution would be to change the item level of "blank" Sarongs to 1, so that they can not be enchanted well. That way players without INT can still wear them for cosmetic reasons, but don't get the big resistance bonus for free.
