GNOME ships a scanner app that can scan from many (newish) networked scanners without a driver. The UI is, ahem, about as minimal as you would expect from a GNOME app, but it works.
(Seriously, GNOME, whether to scan one side or two sides is actually important and the desired mode changes all the time. Would it kill you to dedicate some screen real estate to it, instead of filling everything with empty post-modern white space?)