The Strongest Armor = Bikini Armor
The strongest Magic Spell = Slip
Maybe we should test the two together. Cast slip on the bikini armor, and see what happens.
Will it enhance the armor, causing attacks to slip around the wearer?
Will it act as a curse, and make the wearer fall down perpetually until either the armor is removed or the spell canceled? We've usually seen it applied to the ground under a person, so on an object could be interesting. Could a person learn to control the slip, and it becomes a new form of transportation?
Would it be a more simple reaction, and the armor just slips off the wearer?
Which wife would you like to see as the test subject? My vote is for Yae. As a front line fighter, she would benefit most if attacks slip around. She is physically capable enough to learn to skate with it if that's at all possible. If the armor just slips off... well, who wouldn't want to see that?