Originally Posted by
frpax
My LBS has told me that SRAM & Shimano derailleurs are not swappable (if that's a word) back and forth. Must use SRAM shifters with SRAM & Shimano w/ Shimano.
I believe you are right. J-Tek
http://jtekengineering.com seems to have a product that addresses the issue though. I have used J-Tek for Campy-Shimano issues and it worked quite well.