Big Pistons
I fully agree I do emphasize constant cross check and actually, luckily, sometimes due to precession error the Gyro 'Twizzles' unexpectedly and I say see that?
As I do realize that vacuum failure is generally incipient until the gyroscope fully winds down... I also recommend that they keep the vaccuum indication or light in their scan...I want them to always check if the instruments are making sense..as opposed to just controlling the plane with them... of course I emphasize good unusual attitude recovery techiques...it's the best I can do...but again I truly agree...I think a standby gyro is the best option...I tell them as much as I can think of...unfortunately I don't know if I think of much or even think of enough...
This is one area where flight simulator technology is helpful...
but I'd be afraid to use uncertified technology...I'd be too fearful to trust my life to it...I tellthe commercial hour builders too fly IFR in SE all the time but only if it's very light IMC...
plus lack of Radar or even stormscope further precludes real heavy IFR work...