Can't comment on the BTs as I've only met a few in our store, but we had a decker at the dog daycare that I worked at. Awesome little dog, but when that basenji streak came through he could be the worst little $hit to deal with.
He was good enough to be with other dogs at the daycare, but I wouldn't say he loved being there and he certainly wasn't running up to new dogs to make friends. We interrupted whenever he started posturing or being a buttface, and he'd wander off to do his own thing, but if anyone said fight he was all for it, lol.
I would totally own one someday.
Siri picture taken by Linds.