For anyone who has worn one or the other (or especially both), what would you say the differences are between the two:
Zpacks: http://www.zpacks.com/accessories/pointy_hat.shtml
Kavu: http://www.backcountry.com/kavu-chillba-hat

I see that the Kavu hat is cheaper (pro)
Zpacks requires a visor/cap to go with it (making it even more expensive that Kavu; con), but the visor can be worn seperately (flexibility; pro) and the pointy hat can be a seat cushion (pro). Also, Zpacks mentions their hat is shorter in the back, designed to keep it from hitting your backpack (pro).

Anyone have trouble with the Kavu bumping a backpack during hiking? Also, backcountry did not specify the weight of the Kavu, anyone know that?

Any comments on either would be appreciated.