...and I'm not proclaiming my subscription to this opinion, but I have heard a lot of people (in particular employers) say to others, something to the effect of this:
Employer: How much twin time have you got?
Applicant: 800hrs. command.
Employer: What's it in?
Applicant: 400hrs in C336/7
Employer: Oh, ok, so you really only have 400hrs multi command then.
Whilst the fact remains that it is indeed a multi engined aircraft, there is a perception out there (as is the whole point of this thread, I suppose) that it
isn't really a twin.
It may be necessary to educate people on this one a little, although with prospective employers it may be prudent to choose the words to do so carefully.
520.