IMHO the whole '1 bike to do it all' thing is a bit of a myth and it's quest is one that I quit a couple seasons back. You will always be sacrificing something one way or another. Even with all of the incredibly versatile and capable bikes out there right now (pretty much all of which noted already)
My suggestion is to take your money and get both a DH sled for shuttles and a shorter travel or hardtail rig. A quick search on PB buynsell shows some good bikes in the $2k range for both a DH and all mountainy rig
For example if I had $4k to spend, I'd prefer a 2013 sight for $2k http://www.pinkbike.com/buysell/2097546/ and a 2014 carbon operator for $2k http://www.pinkbike.com/buysell/2090052/ (….or any other combination of sweet bikes in our rediculously good local bike resale market)
and voila, you get to RIP anything!
Fair enough, though I do believe you can find a bike that can do both things very well, its just a matter of what you're willing to sacrifice a little bit. The new Spesh SJ actually seems to be a great bike, heard it climbs great, and descends awesome aswell. My only bother with specialized is they seem to be quite overpriced.. and the SJ only offers one aluminum option which is a bit of a let down.