Bristol_Jonesey
Quite honestly I can think of noting worse than sat round poking a screen with my fingers all day long.
To my mind, it's one surefire way of exacerbating any upper limb disorder.
Having never tried a touch screen with a DAW, I still dare to agree. I just can not imagine a touch screen that would not cause health problems. Of course, my imagination may be failing me :o/
I have used a touch screen for other purposes, with relatively few buttons on the screen, and the propability of mis****s was annoyingly big. And the troublesome thing is you really have to stare at the screen to find out if you've hit a wrong button, because the screen gives no response to the finger.
If the screen is so small, that you can rest your wrist on the side, the display is too small to contain enough functions, if it's big enough to hold all the functions needed for fluent work, keeping your arms lifted for hours will surely cause problems. Human fingertips are simply too thick compared to a cursor arrow.
I can't imagine editing audio clips or volume envelopes on a touch screen.
But I don't mind if I'm one day proved to be wrong in this.