It's quite difficult to support Monero anyway in combination with other coins, because the BIP39-like seed cannot be used to derive private keys in the same way as other coins. First, Monero uses a differnt curve - Ed25519, not secp256k1. Second of all, BIP32 and other hierarchical derivation schemes are not defined by Monero. Third, and I could be wrong about this, but there doesn't seem to be a coin number assigned for XMR on SLIP-0132.