Sinewave, still got to zip tie the evotec one mate.... Secure it using rad bolt at te bottom, zip tie the top.... Can't see them though.
I can't say mate, never had the r&g, but the holes seem bigger in the evo tech, so more cooling... Both protect the rad though. I think the evo tech may be thinner and lighter?
I've got the R&G one fitted and below that the R&G down pipe grill, was out on Friday and engine never got above 80 degrees. On a dirty wet ride the grilles are plastered in crap, which would have gone on the rad. I think if you did not use any rad guard you would need a full front mudguard to keep stones off the rad.