Naan bread is a great panini bread and I notice there is even a sticker on the package saying it makes great panini. The pork went well with the cheese we buy from Costco and the ham and onion gave the sandwich a more complete feeling.
However, after a few bites, as good as the sandwich was, we thought it needed something else, so we put some pickle slices on it. That made a great sandwich just plain outstanding.
I highly recommend experimenting with naan bread for making panini. It takes grilling well, it doesn't need slicing and it has good flavor and texture.