I own a Triple Black putter and at first I thought the same: why not just give us the black shaft?
Now, I'm glad there is no black shaft on these. It would defeat the point of a... Triple black concept.
I've looked for copy-cat finishes: you just can't replicate PVD. The "gloss" black from Siege Custom was more opaque spray paint than the reflective nature of the TB Scotties. The plan is to look at KBS gloss in person, but 0.390 overhosel owners are out of luck.
As for quality issues, they must be on the production side because mine has been gamed for a year solid and is doing very well.