I know that this is an ultralight forum but I was curious to know if anyone has every used any of the Arcteryx Needle series of backpacks, specifically the 35? Not the lightest by any stretch, but absolutely bullit-proof in construction and would likely be great for trekking in areas that might not be so kind on packs. Any thoughts? (Just as a ‘heads up,’ I have a Vapor Trail that I currently use so all is not lost…)