Crabbage - Let me just say, I am not an expert on the 92, nor am I particularly experienced at SAR.
It's not a hard and fast SOP that we will default to 'crew hov' to do Night wets/drums. The option is there if you feel it will provide a better service to the w/man in the prevailing conditions. However, we are required to train with it as part of our ongoing currency requirements.