We've been big Cisco customers for years and ever since I saw FCoE I thought it was a disaster. All of the DCB extensions that had to go into ethernet to get it to work was such an ugly mess. It was just too complicated compared to alternatives, and iSCSI got a free ride on all that work (ethernet pause, flow control, etc) and was far simpler to implement. And of course with lots of 10Gb options with iSCSI offload, it was getting harder and harder to find any advantage LARGE ENOUGH in FCoE to justify it's cost and complexity.