Yes, it is used at some airlines as a cargo plane. But after it got the new Rolls Royce engines, it became a real competitor to the B752 and A321 middle range jets.
I just did not want to use another Boeing or another Airbus in the fleet. Although, if the 7E7 was available, there would not be a question. Release date is unknown, I hope it will be ready within 1-2 weeks.