From the "Owner's Manual" [1], it appears that this is just another ETH ERC20 token. All of the "portability" features of it are just based on atomic swaps, whi

From the "Owner's Manual" [1], it appears that this is just another ETH ERC20 token. All of the "portability" features of it are just based on atomic swaps, which means that the security of this token for most purposes is equal to the security of the lowest security chain on which it lives. Since participating in this requires being in the ETH ecosystem, and this is not designed to be an "appcoin" (single use token), but instead is designed to be a general purpose currency, I'm unclear what it really brings to the table. Also, it appears that it will only support being on ETH initially. While I imagine it would be pretty easy to port to ETC, it's probably never going to live on top of Bitcoin, because the smart contracts would be prohibitive in terms of cost. 1 - https://www.metronome.io/pdf/owners_manual.pdf https://www.metronome.io/pdf/owners_manual.pdf