well for PVM i would recomend the Cresant moon for the static shock because it is really helpful if the enemy is not lightning imune
Problem is theres a bazillion lightning immunes and the chance for static is relatively low. Most of the times you're dealing huge amounts of damage such that by the time it triggers the monster is already below 50%. I keep it on the switch of late unless Im going with OKs in which case I have the passion pb on the switch. If you're just cowing then fantastic...use the CM by all means. Also remember it depends on your gear too. All Im saying is look at the differences in damage for your character before blindly following a guide.