My guild has been doing the 10s to 25s jump in preparation for WoD. We currently have a discipline priest applicant (heals well other than some odd timing on SS). Problem is that the first reaction for both of us for a spiked low raid member is PW:S. We both have a twitch to shield the active tank as well.
My first thought is "if we recruit this person, I'm going holy". Healing with another disc in the raid is just painful. I don't even like our shadow priest much because he shields himself (I haven't made him stop yet and have been trying off and on since Wrath).
Do you have to divide the raid in advance as "who gets to use PW:S on whom"? Or do you just say one person only get a rapture target? Or do you go with constant fuming that your shields only work part of the time?