In reply to DaveHK:
The WayBack and Hardside both have what K2 call "All-Terrain Rocker"
(30% tip rocker, 70% camber).
The WayBack is a light weight touring ski (best for multi day tours and big 1500m+ days). The Hardside is a heavier, wider, more burly free-ride ski with much more torsional stiffness. 2 very different skis and constructions.
> My understanding was more rocker = less edge in contact = less grip
Kind of true.... Though in theory the 'all terrain' rocker should engage during the turn. So when ski camber is reversed the effective edge length is actually the same. Not all rockered skis are horrible on hard snow. IMHO the benefit of well implemented rocker easily out weights the down side.
If you think the Hardside is too burly (or heavy) for touring then consider the 90mm all-mountain / piste models from Movement, Dynastar or Volkl. With dynafit bindings they would be great, ski well and still light.
Touring specific skis often ski like "soggy noddles" but they have a place for people rocking up 4000m alps in lycra