Ledger support for liquid is basically nothing (there's an old app for ledger nano s, which is ancient now, not even sure the app still works..). Does Trezor fare any better?
I got a jade just for liquid, but it's my least favorite hww.
I don't use Liquid and to my knowledge Trezor have zero plans to add support for it. I imagine since it's Blockstream that their own products would be the best choice for anything using Liquid.