I wonder how many power pilots do check the ASI ion the takeoff run Also why is it not a check in a glider?
Theres also the point that all aircraft are fitted with an alternate static even if it is not labelled as such. Break the VSI glass and you have a very expensive alternate static.
Remember in the old days aircraft did not have instrument and on a good day with a horizon no instrument should be necessary. A different matter in IMC.