One of the main advantages of a touch screen is compacting / stretching the waveforms
Micsig doesn't do the pinch-to-zoom for horizontal time base. I assume they tried it and decided not to.
I can think of a couple of reasons why it would be "wrong":
a) It seems like it would be un-ergonomic on a vertical surface.
b) The horizontal also goes in 1/2/5 steps and pinch-zoom is a continuous "analog" input so it doesn't really fit.
I'm curious if people with pinch-zoom 'scopes ever use that feature?
PS: Micsig screens
are multi-touch, they use it for other things in the UI but not horizontal timebase.