I've always wondered about this. I have been hesitant to buy from outlets for a while now- I just feel like I am getting better quality from a full price store.
I have one MK MFF satchel and so far no complaints. However, I do take issue with the prices of MFF items, they're generally $299 with an occasional 20% off until they go on clearance (although I've never been lucky). It pains me to pay that much for something that's MFF, especially when you can probably get 2 bags for that price over at Coach.