You can protect your Trezor with a PIN and a passphrase. Even if local authorities walk into your house and confiscate the device, they will not be able to confiscate the coins.

And for the backups - if you are not satisfied with a single recovery seed, you can use Shamir Backup where you split the recovery seeds into several pieces that can be hidden in several geographically separated locations. When your device is confiscated, you can recover your funds by going through these locations. (Shamir is m-of-n where you control the value of m and n).