This doesn't sound good for canyoneering, being twice as heavy and bulky as Hyperflex 4/3, especially when you consider the often long approach hikes to some canyons, as well as the bulk issue (when not wearing, may take up too much space in canyon backpacks). Get back with us after giving it a spin in a canyon!
Why do all our posts end up in italics? Can SOMEBODY turn the italics off . . . it is easier to read straight text.