Another house rule that I use is that aesthetics don't need to match what is in the rulebook. Your character's armor and weapons do not need to look like the actual items described in the book.
With weapons, I generally say it needs to look like something from the same weapons class. With armor, I ignore it entirely. It's too difficult to pull off good builds without the best armor you can get, even if that armor doesn't fit with your image of the character. As long as the players know that monsters and NPCs will act as if their fashionable wardrobe provided the same defense as a suit of full-plate, I don't have any problem with it.
I'm sure many DMs fudge the rules when it comes to small things, like calling a scimitar a katana because your player really wants to use a katana but doesn't want to spend a feat to get it, but I doubt many are as lenient with armor or other items.