I never said glass cockpit, you inferred the second word. Besides which, representationally, there is no difference between seeing the chart on a G-600 or 696, you gather the information in the same format of having final product at first glance rather than extrapolating it from raw data onto a paper chart. What part of the concept is eluding you? The difference between "glass" and "steam" is that with glass the equipment gives you the final result while with "steam" the equipment gives you raw LOP data that you need to develop into a result. I have full portable glass with a Bendix Av8or Horizon, I even have it with synthetic vision, AHRS and all. It's not legal for IFR use, but it's still glass and it's portable and a GPS. It doesn't matter how it's certified, what matters is how it relates the information to you.