I highly doubt that him visiting USC with JuJu would help in that recruitment. Obviously it shows that he isn't serious about ND and that won't help with JuJu. If anything, it would make ND seem like a riskier bet. Shoot, our current commits even want to be at USC. At least, that's how it could look.
No, Juju and Luatua are not just casual recruiting buddies but close family friends. They talk about their recruitments with each other. Juju wouldn't have to read into Luatua's actions to figure out what his motivation for the visit is; Luatua would tell him. My (half-joking) point was that if Luatua goes on the visit to SC and fully understands what Juju likes about it, he is in a better position to argue the relative merits of ND.
But let me emphasize that that was half a joke. Luatua most likely just wants to go on a fun visit to a fun school with a couple of buddies.
And if by some chance we lose him to SC, it won't be the worst thing. We don't really need two TEs in this class, especially the way Kelly is raving about Smythe. 2014 -- Niklas, Koyack, Smythe, Heuerman, Weishar. 2015 -- Smythe, Heuerman, Weishar, Blankenship if necessary, incoming frosh. Plenty of bodies, plenty of talent.