Why do you need both of them there? Did you like the look other one or something? It seriously doesn't matter, you're probably likely to get a better set if one of them is there so he can focus on the mixing. I presume it was Dan that you saw, he's a good dj man. At the end of the day they're both gonna play the same tunes mate. They haven't released one good tune either, imo they haven't released a poor track yet. Your last sentence makes no sense at all btw, no one needs to move aside for anyone, all the big producers are in this game together.
had a chat with him last friday after his set in edinburgh and he said that 'last night' was their next tune to come out on bbk, and will be out around june/july. plus he said that their album is due to come out in september...gonna be sik.