Product idea: a dongle with male & female USB connector, that you can place between USB drive and computer, and which catches possible security violations.
However, the solution is to create tools that are easier to use and get the job done better than USB pen-drives. IBM seems to be all about the stick, no carrot. If they really enforce this (and as a former IBMer, I can tell you they are really long on pronouncements and very short on actual follow-through) I just foresee people bringing more laptops and multiple laptops around into places they previously would have brought a USB drive. E.g. if you can't easily move that Powerpoint from Laptop A to Laptop B because you're in some low-bandwidth hellhole, well, guess you're bringing both laptops along for the ride.
Perhaps a solution would be a combination of the two. E.g. dongle converts USB protocol to (say) XYZ protocol, and software converts from XYZ protocol to readable filesystem.