Austrian Airlines Bag Size Enforcement

It's a busy week with just about everything in grad school and work due, so here is a quick thought.  Austrian Airlines sizes all the roller bags before the security check.  Too big, turn around and check it.  If it fits, it is tagged as "Cabin Approved Baggage" and you proceed.  I like this system and think it should be used by US airlines (I say this confident my bag will fit).

Austrian Airlines Bag Sizer