I used a Cabela's waterproof duffel on my sheep hunt in August. I was very impressed. Great foldover design, plenty of locking/compression straps, tough handles/zippers, etc.
It held up to plenty of abuse with zero issues.
I have a Taku but have not used it. It is suited more for in the field use than for travel. (Which may be your need.) Just inspecting it - it appears it will work fine. I also have a Patagonia waterproof duffel for in the field use. It works fine. A touch heavier than the Taku in the same size.