Was trying the AltServer (for non-EU) route but the effort ended quickly when it asked me to enter my Apple ID and password with an assurance that it will not be saved and that might as well be true. Just not worth it.
In case it’s helpful- apparently you can just use a secondary Apple ID (even one made just for this use) with AltStore and it works just as well without risking one’s main ID. (Though for 365 day signing, that’d also need to be added to its own, or a non-individual, dev team.)
