Just another type of head to make head selection more difficult and confusing.
They come in Ambassador, Diplomat, and Emperor weight heads. So they really aren't going to sound much different then their base counterparts.
Well, that would be my guess. Maybe Renaissance heads different coating makes them sound so much different from their roots. Maybe it doesn't.
If you really want to find out, go for it. With the insane amount of head choices in general, we need all the online reviews we can get.