Thanks for clarifying the purpose of the <USB> display, waterwingz - my misunderstanding.
However, my main point was that the USB remote worked on the S3 up until the new remote functionality was introduced (unless this is a coincidence). Testing with the versions I have available: 707, 940, 1165, 1242, 1319, 1491 work; 2165, 2407 don't.
Or should I select something other than Switch Type OnePush, Control Mode Normal for a simple push button? (I have tried other combinations as well).