Putting skins in freeride skis with Rossignol FKS bindings. WHAT?

Hi to all. Im from Argentina and im thinking about putting some skins to my skis (Rossignol S7 2013 188cm). Where i live you need to walk from 2 to 5 hours to reach the best lines. I don´t know if this is the most stupid question of the world, but, it´s possible to put some skins, with normal bindings (Rossignol FKS) and walk with that?. Carry the skis in your back for 4 hours it´s a really bad thing, and i can´t afford some new equipment, or some new bindings.

Worth it?

(Sorry for my shitty english)

Putting skins in freeride skis with Rossignol FKS bindings. WHAT?