Out of curiosity I had to look this pack up. Back in the late 80's into the early 90's I worked as a land surveyor specializing in remote work. This pack would have been the bomb back then for hiking into and out of back country jobs. I packed my saws the old fashioned way, bar on my shoulder and powerhead behind me.
I can't comment directly on this pack, but I can comment on Dakine quality. My family has several Dakine packs that we wear backcountry snowmobiling. All of them are over 10 years old and have been holding up great. I've never had an issue with one.
The pack you are looking at would be great if you're hiking into a job over a mile away. If you are driving to a job I can't see it being very useful. The saw has to be completely cooled before it goes into the pack, so it's only really useful for hiking in and hiking back.