I've attempted to make this a couple times now and have had issues that prevented me both times (cream went bad and ... something else.) We'll try again this morning. I'm thinking of using a ganache for the swirl.
I've read "The Science of Ice Cream". I really enjoyed it. The author recommended "Ices, the definitive guide", which I have found very useful, though I haven't read the whole thing, yet. I'll add "The Perfect Scoop" to my list. Thanks.