Whoops, I had simply googled "Fix it sticks" and did not see the specific linked one. That actually looks pretty practical - and the case could store spare links and maybe quick-link pliers (is that a normal thing to even need on the road? Not too familiar).

Have you used those in the field? If you have, how well do the bits hold up to use? My only concern is the same as any other bit tool - dropping it somewhere unfortunate. That and I seem to recall needing an 8mm hex for something I did recently - will need to check.