It's been a while since I looked at his fights G, but from memory, taking his best performance (against Kingpetch), he looked an excellent fighter, solid in pretty much every department. I struggle to see many flyweights having an easy time with him if he's in that kind of form. There's no glaring weaknesses there. If we had more prime footage of him, specifically his first fight with McGowan and his second fight with Accavallo, we could perhaps say a lot more about him, but unfortunately we don't.
Would definitly be interesting to see more of him, especially in his prime. As you say he dosent really having an glaring weaknesses and looks well rounded.
Very good little fighter ,I remember his fights on TV against McGowan , they split 2, pretty evenly matched,which tells you how good he was, imo.