Has anyone attempted this? I heard it mentioned int the DC Written Exam video set.
Never attempted this but I see no reason why it would not work. All the MDSs need in order to form the FCIP tunnel is IP connectivity between them, whether those IP addresses are on the same subnet (which is the case for OTV), or on different subnets
The OTV DCI should ideally also be able to support Jumbo Frames (about 2300 or higher ) for best performance
it works fine. Remember to increase the MTU end-to-end or you will see issues with the FCIP tunnel forming / failing / reforming over and over.