After about 7000km of cycling last year with the Blackburn Outpost Elite Handlebar Roll, I can say that overall I am extremely pleased with the purchase. As I was riding a gravel bike wth 400mm handlebars, it was very tight to fit the drybag without having them interfere with the shifters. This meant that I had to adjust the harness to quite a low position to clear the shifting. This resulted in the tension straps being very difficult to get around the drybag as the straps mount of the handlebars and the straps had to reach much further. In a higher position on a wider drop bar or a flat bar, it would have been a much better fit.
I really liked that I could take things out of either side without having to take the bag of the harness. It was stable, kept all my things dry and made a great pillow at night. If you are looking for a bombproof bag that is extremely stable when hitting the trails, then this is definitely the bag for you. It’s built tough as nails and I was pleasantly surprised at the amount of stuff I could fit in there. While not the lightest on the market, at 795g it was reasonable considering the build quality.