Touch + Active Digitizer Pen is very good in my experience.

Handwriting recognition has gotten much better this decade, and having 'fingers" allows for pinch-to-zoom and finger-point to scroll. The pen allows for copy/paste, selection, and "hover" allows you to access Alt-text.

Touch + Active Digitizer seems to be an acceptable replacement for a mouse, and even functions as a very crude keyboard with handwriting recognition. The only issue is that I type several times faster than I write, so the keyboard is still my preferred entry method.