Pretty stable so far, slope walking, maximum slope angle, interaction with dynamic and static bodies okay, fixed nicely to the floor when grounded. Note this Kcc is being driven by very naive inputs. No accumulating velocities or anything like that at the moment.
Certainly seems more stable than what I've seen and heard about the btKinematicCharacterController anyway. And the nice thing about not having it in any way part of the physics world is that things like edge climbing, grabbing, stair walking and so on should be a lot easier to implement.
Thanks for stopping by.