I can't stand fingerprints on my monitor, but I don't even notice them on my phone or tablet. Before I got my first touchscreen phone, I was pretty sure the dirty screen would drive me bonkers, but that never happened.
The oleophobic coating does vanish with use over a period of time. That's why you wouldn't see fingerprints and such on a new device, but would on an older and well used one.
I have a Surface Pro with a touch screen and found it to be very useful and natural to use.
The Surface is plugged into a dock for all my heavy work, so I'm not using the screen anyway. If I am using it as a laptop for more internet-browsing related work, the touchscreen is so useful that I don't need a mouse.