I am forced to agree, cube cutting appears to work best with Capstan Blue. I have tried it in several different pipes (I found it awful in a corncob) and with several packing methods. The cube cut brings out the flavors best, and eliminates any harshness. Fold and stuff initially tasted fantastic, but became somewhat rough midway through the bowl(s). Rubbed out, I found, muted the flavors, but resulted in a milder smoke for me.
An interesting note: I did not find that it tasted any different in a clay pipe than it does in briar. Typically, I taste more of the base tobacco's flavors in my clay pipes than the briars, which subtly subdue the intensity, due to the cake, I imagine. Cube cut Capstan Blue in intense on its own.