In reply to jack Humphreys:
Anyway to answer the question, I have found the NZ designed Aarn packs to be:
a) bomber
b) extremely comfortable
c) extremely functional
I've been using one in the UK for hillwalking and find it suits everything up to grade 2 scrambles, and really cold weather (some of the bag fittings are hard to operate with frozen and/or gloved hands).
I used a Guiding Light + exped pockets for tramps in NZ, and use a Natural exhiliration as a crag bag (no balance pockets) + hillwalking (sometimes with pockets) + short exped bag (with pockets) in the UK.