For your parameters (2", tactical, cheap) I still think CS is the way to go, but hey, if you can't do CS and the Nano is too pricey, how about the Subcom or Keycom:
I have a subcom and I truly have no idea what to do with it. The combo edge does not work for me. I bet it is great for cutting zip ties, opening packages and so on, but for cutting food doesn't do too well.
Mikel