The purpose of a #Bitcoin signing device (hardware wallet) is to protect your secret material (seed, private keys) while in use. That is, during signing.

When your seed is at rest, there’s no need for it to reside on silicon. It’s just information. That information can be written on paper, memorized, stored elsewhere, etc.

Which way to store the information comes down to the purpose of travel. If it’s a permanent exodus, you might use multiple techniques to move seed material along with pre-signed transactions so you have plausible deniability and the ability to bail.

If you’re just traveling temporarily, then you probably don’t need to bring a hardware wallet with you. Leave your Bitcoin at home.