was looking at this project for securing cardano stake pool node with a hardware wallet (trezor specifically) https://github.com/vacuumlabs/cardano-hw-cli
just curious if anyone out there has used this to secure their node, was it possible to use the "hidden" wallets feature in trezor? also i'm curious if if all the signing and certs could be done with the trezor or do you still need a air-gapped environment for protecting keys? or is trezor the "airgapped" environment now?