A very interested topic to be discussed and as some have mentioned, there have been some good comments. I myself have conducted a MIRA course, but there are the likes of other courses such as the STORM course which is exactly the same as the MIRA, just with a different name as there is only one company that can conduct the MIRA course. Let us not forget that these courses are endorsed by the RCS Edinburgh and are not fully recognised qualifications such as a BTEC or City and Guilds. I am by no means saying that either of these courses are bad, but lets not forget that any fully qualified and experienced medic/company can run such a course and call it something else. As long as the student is happy that the company has the relevant experience and expertise, then does the name of the course actually matter if all of the relevant subjects are covered.
My personal opinion is that all doorman should do the standard FAW, however all front line operators should do the FPOS (I) as a standard and not the FAW. If you then are working in hostile environments, then I believe all consultants should do MIRA/Storm course or equivalent. But as mentioned, practice makes perfect, so keeping current is keen. it is all dependant on the area of this industry that you operate in, if you work in the sand pit, FPOS(i) would suffice, however if you work with the media then you need a remote medical course as you do not have that in country support and need to be on your toes with basic illnesses, diseases and then up to trauma level and evacuation techniques.
A issue i have seen first hand is that some consultants in today's market, even though they make decent money are not willing to invest in themselves.