Can't see that it would be of benefit for a student.
The aircraft I fly is fitted with 2 and is directly connected to ADCs (Air Data Computer) allowing afore mentioned to compare speed and attitude. It is given as an indication on the EFIS with reference to Vstall. The centre point being 1.3Vs which is actually Vref for the given weight at that time for landing.
We tend to fly above that anyway allowing for the elements; ie gusts and windshear, as anything below would be considered dangerous.
To be honest I've never really looked at it as the speeds are bugged on the ASI so are part of your normal scan anyway. Infact this is the first time I have really considered its relevence, I think its more for the a/c computers than the pilot.
Well that's my bit of waffle don't really understand it to be truefull!
