Sure. For criminal cases, the Budapest Convention applies, the latest (more privacy invasive) iteration of which was put out for signatories to join pretty recently. Regardless, whatever marketing claims Proton and Quad9 are making fall flat.
I know? I cited Lugano to make it clear that Proton’s marketing that Swiss laws (as far as LEA is concerned) are some kind of a shield is a farcical claim at best.