Giving further thought, I've decided to avioid doing this. Any touch event check is unreliable and as long as it does not remove wanted functionality, but merely avoids removing unnessary (but working) features, this is fine.

Imagine what happens when `navigator.msMaxTouchPoints > 0` but our specific touchevents are not supported. No touch support (because our touch events do not seem to work in IE10 right now) and no zoom slider either.