We're actually testing it today on a more broad scale than we'd like (making it as fine-grained as we want is challenging on a technical side). Right now, about 1/5th of our hashrate (EU cluster) has a more open set of coins that it can deal with (essentially 5+ difficulty), where the others are only dealing with 20+ for now. We want to split it further than that, but again, its not something that happens overnight (unlike the hashrate boost).
Thanks for your updates poolwaffle.
As an update for my 11 miners, I am now seeing an average of 28.16MH/s accepted which is almost dead on what I see from the client side.
In 83.85 hours I now see a 0.01048056 BTC/MH average (highest is 0.01217259 and lowest is 0.00996523).
The average was pushed down a good bit over the past 24 hours.