I don't see anything wrong with it. Like the Blackbird, it's a bass for people attached to the artist. And if you like Shavo, you'll like this bass. That is what signature instruments are for. I saw it on a hanger at the Frankfurt fair, the silver-grey appealed to me, but the vintage-large headstock looked strangely out of place (I find the smaller headstock of modern birds more proportionate to the body).
I wished Gibson would do something radical with the TBird design for once. Something like the Firebird X, boldly going where no man has gone before (or would want to). Monorail bridge (in chrome to make you guys happy), piezo saddles, active electronics (but working also passive), extended upper reach, graphite strengthening of neck/headstock, effects useful for bass (flanger, overdrive, delay etc), Buzz Feiten bridge, the works.
Of course you guys would only moan why its not an exact sixties replica
(the be- and end-all of TBirdism for you, I know!), but lesser folk like me would buy and play one in a heartbeat.
Henry J. are you listening?