Does anyone put in a knife switch (or other type of cut-off) before the meter, or after the meter in order to cut off power to the house if you need to work in the panel?

Would seem safer than just yanking the fuse out of a hot circuit...reduces the danger of arcing, I'd guess.

I currently forget whether the knife switch goes before or after the meter...

By knife switch I don't mean one of those open-blade ones, but there is a type where the blade is completely enclosed.