babylock ellageo and brother ult 2003D

I have the brother ult 2003D that I bought over the internet. What I am wondering, since everyone says these two machines are exactly the same thing, is can the feet be interchangeable? I have a babylock dealer nearby and not a brother dealer. I would like to be able to buy the extra feet. I have assumed that they did and have purchased the 5 groove pintuck foot and have not used it. I could return it if need be. Has anyone purchased extra feet for either machines interchangebly? Did I do a major boo-boo. I also purchased extra bobbins from the same place. I had mentioned at the dealer that I had the brother machine and they did not tell me otherwise. Sandy