I had one for breakfast yesterday. No tools required.
The NiftyKutter would work better at opening the plastic wraps than the P-38, though. But it's not a requirement.
I could never handle the breakfast ones. One thing I did find interesting, the ones made in different locations were quite different. One type of wheat "bread" was OK. The other type was nasty. Both required some doctoring, like jelly or peanut butter. Oh, and BBQ or Tabasco sauce makes almost anything more edible. I REALLY liked the ones with the old-fashioned candies though.... what were those? They had white paper with black and red writing wrapped around them.