The Bearikade unfortunately is not approved by the IGBC. Their testing grizzly bears managed to chew holes in a pilot model, and the Bearikade folks never submitted one for re-testing. Of course I didn't find this out until I had spent the $$$ for one! It is still accepted by the Sierra national parks, though.

I also have an Ursack S29, which is approved by the IGBC, so I'm covered one way or another. I use the Ursack except where a hard-sided canister is required.

The rules are so complicated--each jurisdiction makes up its own-- that you really do have to check with the individual park or forest!