Black Diamond Boundary: only one length adjuster per side, and large tubes. If you take the time to cut what you don't need off the end of the lower section, you make them quite short, certainly short enough to not extend past the top of a pack when strapped on.

Price is right too.

If it's steep snotgrass or hard shale chutes, then you want an ice axe. 100CM works for me both as an arresting and walking aid, and you can get one from SMC.