Notice I said custom, one-off? I was, and still am I guess, testing fit and function. Steve does this with a certain few, like right now with the LT struts. I find it nice that they actually do real world testing before they get into if they can do it for money.
Believe it or not, Calmini has a comlete cable locker for the Sammy. Uses the HD shafts they make. It's been around almost 10 years now. The market just isn't there for production...
yet.

Be patient, the great, unexpected things for the GV and Kick are right around the corner.