It's something we've talked about, but haven't committed any resources to yet. Right now Greymass is in the process of rebuilding "eos-voter" (aka "Greymass Wallet") into a brand new EOSIO-compatible wallet.

I've always had aspirations of merging Vessel into this new codebase, it just hasn't happened yet. We have a tiny team still and more work than we know what to do with, we'd probably have to expand the team a decent amount if we were to bring other blockchains (non-EOSIO) into the mix.