Raising iCloud storage to 4 TB

Has anyone done this? According to Apple you can raise your iCloud storage above the 2Tb limit to 4Tb by combining an Apple One sub (Premier level presumably) with an individual purchase of 2Tb.

“After you subscribe to Apple One, you can buy more iCloud storage if you need more. With both Apple One and an iCloud storage plan, you can have up to 4TB of total iCloud storage.”

Just curious if anyone has done this here?