I thought this one had long since been laid to rest !
I opperated with 'conventional' SOP's for over 6 years, but now use BA's.
I found it no problem converting to them, but given the choice would prefer normal SOP's. Anyone I fly with who has ever used any other SOP's other than BA's always has 'things to say' about the way BA does things.
Its healthy to question an SOP so long as crews operate to their companies SOP.
My biggest gripe over BA's SOP's are the operation of the 'throttles and reverses' on an RTO. All trainers I speak to say that is the single most common missed item in the sim by the NHP.
I dont make the rules, I just play the game !