It doesn't look like an item that would be portage friendly. That shoulder strap will tear off a day or two in.
I like to purchase buy once, cry once gear also so the price is not of concern to me. With that, it would have to go in a pack. And in that case a regular sealline bag would suffice and leave enough money leftover for a bottle of Cognac.
https://www.seallinegear.com/dry-bags Portaging ability is a very large condition of my camping purchases.
Just my two cents.
Tom