Speed control is paramount when flying.
The fear of people to stall/spin is such that a lot of emphasis is put on not going to slow. This invariably leads to folks going too fast.
The fact that there are more folks going through the fence at the far end rather than landing short is the best proof of this.
And going back to the original thread; when you sideslip it is the attitude which is important to control speed. Anyone who thinks that the ASI gives any valuable information during the slip does not understand how the cookie crumbles.
FD