I just tried this on my A500 with Indivision ECS, worked great! I was a little nervous doing it, and a bit confused why it wouldn't update (until I put the update file in the same directory as the flash utility), but once done it looked great on my 37" LCD! Only downsides were that it used a bit more chip memory (obviously), was a little bit slower (obviously), and there was a brief pause when switching between other screens (with different resolutions) and my 800x600 Workbench, but all-in-all it was still pretty cool.
