This looks very similar to the Australian swag bags I've used for canoe-camping: the Duluth Bedroll from Duluth Pack Company in the States, famous for making the classic Duluth packs used in open Canadian canoeing. At $220 it's not cheap but looks like an excellent, sturdy piece of gear that would do the job as well as any swag.

See their website While you're there take a look at some of the other specialised gear they sell, and also read the fascinating history pages, tracing the evolution of the Duluth pack and the Company.

[Update: Our new Wynnchester Australian Swag Bedrolls are available online from www.wynnchester.co.uk – see latest post.