I honestly only have limited experience with corns (I have only one and it's the first I have had) but from my own experience, I have never had a problem feeding mine whether it be f/t or live or even switching back and forth depending on what is available. My corn eats just about anything that you put in front of him. Although it would be dependent upon that particular snake, I don't think that it would be a problem switching from f/t to live, my only suggestion would be to treat that situation like you would with a BP. If you get a corn snake, I would still establish it eating for you by continuing for at least a few weeks what it has been eating before you switch. Good luck with whatever you decide. I absolutely love my corn, it is a whole different experience from raising, handling, etc. a BP.