I guess the guy at the Apple Store lied to me.
As jurassicmac said:
jurassicmac said:For this question, it would have been useless to call Apple to support to find out if it were possible. They will only tell you what is supported. Big difference.
He is quite right that speculation isn't very useful, and it'd be better just to let people who have tried answer the question. Apple are the WORST people to ask this sort of thing, as they will just recite company policy which of course will be limited to what they have decided to support and test.
He probably didn't lie, but simply didn't know and was himself only guessing.