Either the Arc'teryx Khazri or Khamsin packs work for all types of climbing. The Khamsin has more features (crampon pocket, more plush hipbelt). The Khazri is lighter per volume. One difference from the BD pack is this one has cross-stays, that keep the lightweight frame from bowing when it's fully loaded. Plus, the standard Arc'teryx construction- more stitches per inch, better fabric, and a "V" shape for the stays, to mirror the shape of your back.