The work flow that disturbs me most with performances is that if you are in Browser mode and find a rig you want to use, when you swithc to Perfomance mode the pointer to that rig is lost: by turning the Browse knob you find yourself at the last browsed rig in Performance mode, not at the one you wanted to use. This has to be part of the "independence" between the two modes, and I find it really annoying.
If someone agrees with me on this, I'm willing to open a FR about this
OT: By accident, I discovered that when you're in the performance slots, the Type know changes the performance number (same as Rig Up/Down).
I second this and will support a FR.