Originally Posted by
svtmike
The inline adjusters are designed to be run on derailleur cables. Jagwire at least does not recommend their use on brake cables.
everyone I know uses these on their brakes. I have never seen one fail. Even if it did fail i doubt it would break the brake cable itself as it would most likely fail along its length and not perpendicular to its length which would do nothing to the cable. Also, there is not really any compression on your housing as you are pulling cable to brake and not pushing housing. You may have some problem if you were using these with inline levers, but that would be redundant.
Other solutions are to run barrel adjusters on the housing stops at the headset and rear brake.