Ugh, good luck on that one. In FFXI there still are items, which have been around since Japanese Launch, that can't be stored with any of the NPCs and neither can they be sent to an alt.
But yes, Why have all but 3 Swimsuitslot int he Armoire?

Lets say the housing will be in a away you can store more at your house, it still will be getting quite full if you get each and every thing you can get which isn't sell able or otherwise useable.
What is btw the point in gear that can't be sold to NPCs? If THAT is a measure to prevent RMTit clearly starts at the wrong part of the RMT foodchain (which has a lot of parts, because its rather a vicious (if I used the word right) net than a chain )