It will be scored into 10 pieces. I typically use a 5-prong chocolate pick to break it
Doesn't always break along those lines with the higher percentages, like 70%.
However, the gianduja is probably the softest of all blocks (like milk) and Barb will easily be able to slice it with a knife at any point.
Regrettably, this "ease of sliceability" accounted for four extra inches of waste on the wasteland that is my waist.