On a few forums, I've read that he painted the front of his collapsible Summicron. And that he taped his equipment is well known.
The interesting thing to me is that HCB is using a collapsible Summicron years after it was reformulated to be "better". In this, I suspect the artist was going for the results that he wanted without regard for what lens manufacturers and the camera consumer were thinking was best.
As to HCB's gear, he got it to make images other people wanted to see. I don't think he cared a whit whether or not anyone admired how his equipment looked.
Even chewed up into a pile of broken glass and brass, his worst camera is worth more to folks than my entire set up.
And there's the difference between can and do, I suppose. He created images good enough such that now even his unsightly gear can be admired.