Nearly all of my professional flying has been with foreign aircarriers, as a direct entry Captain/Training Captain.
ALL of these aircarriers used direct entry LHS guys from many different companies, most of which had similar...but also sometimes quite different operating procedures.
They were all current on type, with lots of experience therein.
However, found it sometimes was quite a chore to get these Captains to adapt to the present company procedures.
Was often met with the phrase...'well, we didn't do it that way in xxxx...'.
Clearly, this is hardly the point.
The young First Officers expect things to be done a certain way, and are often confused (and upset) when the aren't...with, IMO, good reason. They don't KNOW any other way, because they are NEW guys.
These DE Captains (and indeed Captains that have been there awhile) have a duty and responsibility to at least try to 'do it by the book'...if for no other reason than it makes for a smoother flight, for all concerned.
Of course, a few may run into a 'wiseguy' First Officer, but this seldom happens.
And if it does, a word with the Fleet Manager usually will fix this.