So long you pre-treat the enclosure with PAM which you should do with any new animal, you can use any substrate but preferably one that will allow your hog to do what they would do in the wild, as I mention they like to dig (hence why their nose is like this to better help them dig around) and bury themselves, paper towel make a poor choice when it comes to this species.
I use eco earth or aspen and pre-treat my enclosure 24 hours prior to getting a new animal.