Yes, I’ve carried a canister outside of my McHale.




A week’s worth of food in a large canister is going to be the heaviest item in a pack, and placing it at the top of the pack isn’t the best weight distribution option. Also, during the day when hiking, I don’t need access to my canister. I can carry any snacks or lunch in the top lid or even in a hip pocket.
So, in my opinion, it is best to put the canister inside the pack. Vertical works best for me because I don’t want or need a huge diameter pack, which would be required to pack it horizontally.
Also, the few times I’ve strapped on the canister, I didn’t need the volume of the extension collar and kept the canister fairly low at the top and actually compressed/reduced some of the main pack bag area volume. But keeping it lower this way didn’t affect how the pack carried, since I wasn’t carry a huge amount of weight in total. It did make it more work to pull out a windshirt, or a puffy for a rest stop.
So why did I buy the strap option? First I considered the questions you asked, then decided to get the option in case Dan retired and it would no longer be available. I don’t worry about him retiring because the McHale packs I own will outlive me.
My Bump (32″ circumference) fits a Bear Vault 450 and 500 vertically. My LBP 36 can carry a BV 450 horizontally, but not the BV 500. A 39″ or larger circumference would just be too much volume for me.
Of course you could just buy two different size packs :-) but that would be silly to buy a second pack to only fit a canister horizontally IMO.