Valid point
This article is spot on, will matter when sim box ticking becomes mandatory and begs a couple of very pertinent questions.
Should a third party sim instructor /check pilot be 'company legal'. i.e a fully company approved T&C bloke ?.
How can a third party provider who is not 'inducted' into the company system provide for the operators needs ?.
Accepted, the AFM and probably SOP is probably (almost) the same for "big" aircraft, but what about the rest.
There are some real horror stories out there, right now.