Aviation Consumer has tried flying only with reference to the
instruments page
on a Garmin 296 and 496. That page emulates the standard six-pack
derived from
GPS data. They say it worked. They also said the 5 Hz vs 1 Hz update
rate of
the 496 improves the concept a lot.




I think that's the crucial part. If the update rate is too slow it's
almost worse than nothing.

Even the 5 Hz would drive me nuts!