they wouldn't, silverwind. it takes them a while to learn a territory and they'd likely go traveling to try to get 'home'.
have you talked to the shelter that is offering 'outdoor cats'? it might be that they've rescued these cats and now expect them to be kept indoors when adopted. but they'll be able to tell you exactly what the program is about.
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."