[fadetree]

As a long time Swarmcaller victim, I can verify that un-equipping and re-equipping the weapon seems to work. However, I firmly believe that it's just confirmation bias and there is no actual effect. Consider: when do you most often get desperate and try to get things going by swapping the weapon in and out? When you have gone a long time without a proc, that's when, so naturally you are 'more likely' to get a proc soon after a swap.