Gibson's Custom Shop is producing a Sierra Hull Signature Master Model F-5 mandolin. It's been in the works for a while, and she tells about them here-



She and Justin demo'd a pair of them at IBMA in Chattanooga last month-

She certainly deserves a signature model.   Like I've said before Chris Thile is the male version of Sierra. 
Both of them are akin to the 'Hendrix' of mandolin.  Incredible.

Looks nice!