I would be using the case included with the N9 if it was a little better built - my main issue is with the earpiece slot which tends to slide upwards and essentially cover the entire earpiece. I've since been trying to buy the CC-3015 but it apparently doesn't exist in Malaysia.

The other thing I'm considering is buying a MacBook Air/Pro Gelaskin and trying to cut it down to fit the N9 - there's been no news from them about a possible solution from them for the N9 unfortunately.