Yes, it's possible you can get perm banned before the shadowban is lifted, usually happens when you're hard HWID banned. Shadowbans usually lift after like a week or two, if so then you're most likely safe. I haven't played the game for a while and the shadowban/HWID banning system may have changed with how close we're getting to the release of the Ricochet anticheat, I'm not sure. But I suggest you read these threads: