This! Please!
I am left using the two notes Opus for IR loading, and would LOVE to be able to use my toaster or player for this purpose.
One note: if the IR loader is implemented, I think that it's table stakes to have a mix knob. There are other routing options with the kemper to mix various things; but a more elegant solution would be a blend/mix knob between IR/dry signal.
An alternate implementation could be an IR loader in lieu of an amp/cab (or both)... but I appreciate that might be less popular for some, as they might want the IR in addition to modelling an acoustic amp (where as I am simply after a blended IR signal, with the option of adding some compression, EQ, reverb).