I'm in for a 10-inch Rodman in either the front or backyard; not only would that be a great thing in and of itself, but it would also cut down on lawn mowing time.
After reading this thread I actually started to wonder if there are any real 10-inch Columbiads that are privately owned; my guess would be that there aren't, but you never know.
I 'unlazied' myself and checked the Nat. Registry, and there aren't any listed there, but there is one in the City Park of Arequipa, Peru that probably came from a private sale.