Anyone tried the Coffee Duck reusable/refillable capsules for the Nespresso? I have a Nespresso D300 and wanted to see if they were worth a try. I notice that they are supposedly compatible with every machine pre-2010 (they are coming out with capsules that are supposed to work with newer machines) except for the "Nespresso Krups machines with 1 pin notches; F893, F896, F897". My question is (still waiting for an answer from the company) that my D300 does have a needle that pierces the capsule from up top, so I'm afraid it might be similar to the incompatible models. Everyone else's Nespresso have a piercing needle?