I just realised something: because listening through a door or wall adds to the DC, you can sneak around with more ease, providing it doesn't weigh you down and provide a penalty, by carrying a door or tower shield in front of you. And seeing as, by the flawed stealth rules, you apparently need cover or concealment to be able to hide at all (thanks to 360 degree vision that sees past "clinging to the wall in not-great light"), you can get cover from your own door/tower shield so as to sneak up on people.<br/><br/>That's right, carrying a wall in front of you improves your stealth. Bonus points if you put a poster on it.