Plutus card and Metamask seed phrase

Hi,
I’ve recently opened a Plutus account and really like the concept of it. The desktop part of the account is great and you can swap between your card and your current account easily enough HOWEVER it requires you to enter your seed phrase for your Metamask wallet in order to use it as the crypto wallet and DEX in the app. This is different to the desktop where you just connect.
I’m not really comfortable putting the seed phrase for my Metamask wallet into the Plutus app - they do say that these are held encrypted on the device however, but there’s no way of verifying this. Has anyone else got any thoughts? I’ve gone to the lengths now of setting up a new metamask but wondering whether maybe i should’ve entered my seed phrase?