+111111111
The stomp box world has much more variety than what the KPA has in store when it comes to distortions and overdrives. To me, the BK Butler Tube Driver is one of the best around both for leads, taming a muff and for a clean volume boost that adds some bite. And I would definitely love to see it as a stomp model in the KPA. Just in case any of the KPA staff wants to simulate it (or whatever it is you do to add a new stomp box to the KPA), I am willing to offer mine. I seem to remember that somebody sent the Tube Screamer to have it correctly - so if you want a Butler Tube Driver, just let me know!
For the time being, I have it in front of the KPA as an option and it's a really nice option, in deed. But it would be much more versatile to have it in the stomp section.