Got my tallboy in May and have been really happy with it.
I have not tried the pivot so I can't comment on it. What I can say is that I like the way the Tallboy handles the tech over the scalpel. The geo of the tallboy works for me, I found the scalpel to be more twitchy on the front end. Some like this very responsive steering however I found it to be somewhat unpredictable. If you are a very good bike handler this may not be an issue. The scalpel is built for speed, like a fine tuned sports car. However I prefer the solid handling of the Tallboy, my engine can provide the speed I need.
The tallboy is the only FS 29er that I actually enjoyed riding.
@Delish Sleeveless Joe @VelocityBoy has a tallboy with a lefty IIRC.
The big bike companies are just too proud to licence a proper rear suspension design from weagle. Santa Cruz knows just to go with what works and to not reinvent the wheel to avoid a patent fee.