There's a bunch of them doing outsourced training for us already, makes them a known entity.
Coducting training doesn't mean that the instructors are experienced on type. When my company chose Airbus we were sent to Toulouse for training. Our instructor had just finished his on type training (after Retiring from the military), underwent the SFI course and we were his first gig.
In my opinion Emirates will find it hard to find the experience on type. Given their operation, worldwide international experience should suffice. I think the type rating is the easiest part of the story ( especially if CCQ). Getting to know their way of operation is the demanding part