I purchased a DVB-S decoder the other day with the intention of recieving SBS, I have done a bit of research on the matter and I realise I probably can't watch Sky and SBS at the same time due to them being on different polarities.

My question is though will I be able to switch from Sky to SBS by simply turning off the alternate decoder? Or will I have to manually change settings on both decoders?

We have MySkyHDi and the decoder I purchased is one of these.