I scissor cut all my herb. I find the hits to be much better from all of my vapes when I scissor cut.
It's actually quite simple to do and it has dramatically improved my vapor yield.
Just use a regular shot glass that you'd get a shot of whiskey in in a bar. The old fashioned 1.5 to 2 oz. size, not the fancy tall ones that some trendy bars use these days. Get an old school shot glass. You'll find the rounded shape of the bottom is quite condusive to keeping the herb in a central location while you chop chop chop away using a small pair of scissors vertically. It only takes about a minute or two to chop up about 1 gram of herb, so I think it's worth the extra effort.
I use my 2 piece Mendo Mulcher for a quick initial grind, then I dump it into the shotglass for the scissor cut; however you can just scissor cut a whole nug if you like. I just find it easier to do a quick grind and then finish it up in the shot glass.