I have not had any real travel experience with these bags just yet, however my first impression is that it is very solid and well made and when closed properly I expect it will be completely waterproof. I bought one Lg and one Sm and the Lg is big enough to fit my entire camp essentials in the one bag leaving tons of space the Sm (and tail duffel) for any other required gear for 2 week+ trip. The biggest selling point for me was that the bags will mount directly to the hard case frame with no adapter plates meaning I can quickly and easily swap between my hard cases and soft bags when needed. The external bottle holders were simple to add and are a nice addition. The only minor draw back is dealing with the tag ends of the straps... I don't like lose straps flapping around when I ride and its takes a bit of effort to try and secure them effectively.
Mounted these bags on my 2023 CB500X. Easy install on the Outback Motortek Pannier racks, bags looks great, and well made. Looking forward to using them once the snow goes.
Shipping was fast to Nova Scotia. Never any issues dealing with Dualsport Plus