I kill power at the disconnect and always make sure that power is off there by checking across each leg and to ground on the load side.
Those voltage pens are a good idea...you never know if the disconnect is phukered....then you touch the handle and BLAMO!
“Now the freaks are on television, the freaks are in the movies. And it’s no longer the sideshow, it’s the whole show. The colorful circus and the clowns and the elephants, for all intents and purposes, are gone, and we’re dealing only with the freaks.” - Jonathan Winters