I have this rolls in my mind already for some time. Since Lutz posted some pictures of his trip to alsacian bakeries, to be precisely. One of this pictures shows a baguette roll with white chocolate. That sounded good, but I had immediately the idea that some poppy seeds in the dough would enhance the sweet flavour of the the white chocolate with its nutty taste. A counterpoint to the sweetness is the salty dough with a high amount of prefermented dough and olive oil. This makes the rolls to a delicate treat, which should be savoured only with a little bit of butter so the whole complexity of their flavour can be enjoyed.
An advice for chopping the chocolate: the chocolate should be chopped into rather small pieces, because big pieces tend to form small chocolate vulcanos on the surface of the rolls. The chocolate caramelize then, what tastes not bad, either, but looks quite ugly!