I think they don't understand that we can make the GT do whatever it needs to in order to handle the Kemper's proprietary MIDI stream. They don't need to conform any specification of ours, as long as it is more-or-less MIDI. The GT is unique in that we can have parts of the firmware that are dedicated to communicating with certain devices and handling their special features. Normally, we don't need to do this, but in the case of something that has bidirectional support, it's essential.
If/when they release bidirectional support , we can make it work with the GT as long as it uses the standard MIDI port and isn't restricted to the CAT5 port they have on the KPA. The only question is how long it will take, which depends on how much support they give us and how complicated the protocol is.