CrYpT999 What is the possibility of the Sig27 being able to pass Device or Strong Play Integrity?
I'm sure it will when it is running Motorola's official Android that meets contractual requirements for shipping the relevant Google ecosystem -- exactly as is true for Pixels.
What Google Play Integrity's attestation checks is whether the device is running a software stack that Google approves of. The hardware is capable of certifying any OS (on Pixels, Motorola devices, whatever) but it's up to the remote server to decide which OS and which app it approves of.
Motorola allowing Signature 27 devices to replace the Google-approved OS with an unapproved OS does not mean that Google will be tricked into approving an unapproved OS -- again, just like Pixel devices.