there are better trinkets both for affliction, demo and destro-locks than this,
because when this trinket is available to your stats for destro will not be good enough to take decent advantage of this trinket, and once your destro-gear will be good enough to justifiy a destro-build you will have access to alot better trinkets. For affliction this build is no good at all since it´s not a crit-build. Same goes for demo-affli-build and/or demo-destro build.
Leave this trinket to your arcane mages.