Hi,
what heīs trying to prove?
Well, you can fly in IMC on Compass, airspeed and altimeter....
BUT - donīt do it in an upside down mounted lawn mower
- donīt do it without backup (so double side equipped aircraft with second pilot would be safe)
- donīt do it with the cloudbase at least a 1000 feet above the nearest obstacle!
that could very easily ended in a CFIT or in flight break up - cause when you get disorientated with a such a limited panel, you donīt get the chance to remove the covers from the horizon....
Stupid stupid dangerous guy!