I just received mine, and like it, but I have to get used to its stiffness, I am used to my old backpack which was way more flexible.
one thing I noticed that I didn't read about, is that you can remove the Y strap in front of the pack, in addition to the waist and thorax straps.
also, the main compartment's zipper opens only to half the height of the bag, which can be a good or a bad point depending on your needs. I personally would have prefer full height zippers.
the bag seems even sturdier than my fatboy versipack which still has to show any sign of wear (except for the collar string, which begins to wear out), so I don't think it'll suffer any kind of use I'll throw at it.