Considering that for less you can get a similarly spec'ed Trad Plus, or that for a little bit more you can get a plaintop VOS R8/R0....
I think the signature costs too much. The top does look killer.
Not bashing Gibson at all...I'm sure they'll sell real fast.
Edit: Well compared to a Trad Plus it might not be that much of a difference...
The A2Ps (normal not Slash) cost about $80 each in zebra, so that's $160, plus the $116 from the Tonepros bridge and tailpiece makes it about $276 in upgrades...the Trad Plus costs about $2300 so that's $2576.