Afraid I dont have any answer to give... We are just finishing up one job but have a release to get out in conjunction with WP 4.5 in early/mid April... so despite some discussions and wanting to move out on this, its going to have to be on hold until after the release...
We will get back to you with a more definitive answer after that release... Sorry, I can't give you a more concrete answer at this time... 🙁