I think the first question is does it support Monero and if the answer is no, how quickly can it do so?
it's still in a very early stage - it's built to support multiple currencies, yet i had to start with one, and I picked Ethereum since that's what I'm most familiar with.
Under the hood, the firmware uses Trezor's crypto lib, so supporting Monero would be definitely feasible. I'm using some of the C code from their legacy firmware for the signing process, and Monero is only supported in the new one that uses micro-python - porting would be harder but is doable.
Maybe someone experienced with how those tx work can chip in, I've never really used the chain before. I think ithe project would be a great fit for Monero though, since you can source the components quasi-anonymously.