@GoodVibesBoro was so kind to sell me his personal EMK, since they were sold out in the shop. I also bought a stem/WPA that can be used with both capsules and a screen.
So far, I've only tried the capsule and heated the EMK for 24 seconds with the Big Shot and then vaped it immediately without waiting. The capsule can be cleared in one hit, and I don't think reheating is worth it. The vapor is very dense, milky, and flavorful, and it's cooled perfectly by the marbles in the WPA and the water piece.
I experimented a bit with longer heat-up times, up to 30 seconds, but then the AVB was very close to combustion and the flavor wasn't as good. I think the 24 seconds that GVB recommends is pretty spot on.
I'm looking forward to more experiments!