Yes, yes and yes.
In that order <img src="/forums/images/graemlins/cool.gif" alt="" />

Osprey has a new series coming out (forget the name) that seems to combine the Atmos and Talon series, saving weight and increasing capacity over the Atmos packs but offering a trampoline frame. We shall see.

I have an Atmos 35 that I use for a daypack, because the effective space isn't adequate for even lightweight overnights. But...it's really quite comfortable. A Talon 44 is my current favorite multiday backpack, but it's not nearly as cool as the Atmos.

YMMV
_________________________
--Rick