The SwitchBlade doesn't send any MIDI. My rack is a SwitchBlade GL with a H7600. I use two Behringer FCB1010 to send various MIDI signals to the SwitchBlade, the H7600, and other guitar gear such as a Mesa Triaxis. I have the SwitchBlade set on channel 1, the Tide to channel 2, the Mesa on channel 3 and so on. I program my patches to send the right MIDI signals to each unit, but their are independent, although serially in the same MIDI loop.
As an aside, I use the WinBlade program to program the SwitchBlade, otherwise it;s just plain horrendous.