Nice article. Jack was great at being able to play lines that differed so much from his vocal lines.
That player I think from Texas you posted once; I think he may have been blind. I'm not sure. He is the only one who seemed to be so comfortable playing bass and singing at the same time as Jack was. He was no Jack Bruce, but seemed to have been born singing and playing bass. The effortlessness with which he did it was immediately obvious.