Sorry to bump, but how did that porcelain tile hold up outdoors. I'm debating on what to go with in my small backyard and am leaning towards porcelain. Based on the conversation it doesn't seem like a risk because everyone says that nothing holds up well in the elements, except maybe grass or turf.
It's been about a year and a half for my patio and its holding up just fine. Don't walk on it during or after a rain though, you'll probably slip and crack your head open.
I purchased mine at Bedrosians tile in Orange.