Vaccination status check upon re-entry into U.S

I’m an unvaccinated Canadian on H-1B in the U.S. Under the vaccination requirement I think I’ll not be allowed to re-enter the U.S. if I leave for any reason because of my vaccination status, per the below orders:

Has anyone tried their luck in exiting and re-entering while being unvaccinated? Do they only verbally check or are you asked to show your vaccination card? Any exemptions/accommodations for those who are residing in the U.S. (like me) but are not permanent residents (green card holders)?

Any information will be appreciated.