The good: A very solidly built handlebar bag that holds a lot of stuff. Leaves a nice gap for hands to comfortably hold the top of your drop bars. Waterproof bags is airtight and you can really compress items inside.
The meh: The bottom of the holder sags when not tightened high and can rub wheel. You can overstuff the bag and it prevents you from getting on the drops. The roll bag doesn’t allow easy access for quick grab items.