Can you combine coverage for split tests?

So as some of you may know, there is a lot of issues with PhantomJS memory leak that forces many of us to split our tests up.

However this sort of messes up the coverage a bit and hard to do minimum coverage checks reliably.

Is there something built-in to gulp-karma that can combine the reports of split test and provide the same figure as if it was done in a single run? Ideally with the coverage threshold checks as well?