Porchetta is highly regional. In some firm or other it is a rolled pork roast stuffed with herbs. But, there are regions where it must be whole hog, others that say any pork roast that is rolled with herbs. Think of using the term BBQ pork in the US.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."