My touch screen is on an adjustable stand. It's my only screen.
I can fold it down or not. I can use it alone or share it with a friend on the other side of the table.
Sometimes, a friend and I will each have our own instance of TH3. I have a FCB1010 to go with it.
I tend to use touch when recording (because touch is silent ... no clicking or key presses. My keyboard, mouse and Alpha Track are not silent.
I use touch hen practicing. I often sit back though and use the keyboard and mouse and don't touch the monitor at all.
Really, since I cannot use touch to work with envelopes, touch has limited uses in Sonar. I don't record automation often.
I do use touch when working with RME's TotalMix.
Thanks for asking.