I have not read the report, nor can I find a free web-based copy and am not in a position to buy one. However, I am of the opinion that the more trainers connect with trainees the better the training input. The old style 'Sir!' and shouting did nothing to get the message across. It did great things for the ego of the instructor though. Pal, mate etc is inappropriate, but calling the trainer by their first name seems entirely sensible. What possible problem does this create?
There is a need for trainees to be made aware that certain situations will require a disciplined approach, but that does not need a full training course where they are treated as subordinates, or worse. I work in a service with no rank titles used, everyone uses the first name and it works. On the fireground the relevant rank/role respect is still given. Why should a trainee be any different. What training input prepares them for the fire station if all day the trainer is a mini-god, who can only be called by a title and not a name?
It seems to me that any trainer who needs a title to do their job is hiding behind that title. Out if interest when you attend an external course (FSC or other service, or private provider) you are a trainee, do you expect to have to call that trainer 'Sir' 'Station Manager' 'Training manager' 'Health and safety consultant' etc., or would Bob, Mary, Mick, Julia etc, be more appropriate and make you feel more comfortable? I doubt it is the former and so why should it be any different for any other training?
PS when I do any training, or deal with my staff I like to be called by my fiorst name, as I would like to call my trainers so. I find it works quite nicely thank you. On the fireground my name, my rank/role or my call sign are perfectly acceptable terms of salutation. The situation usually dictating which.