I've read about this and it seems like a good idea. It will make the bed changing process easier with two smaller duvets and we can both have our own duvet rather than fighting over one.
My only concern is the duvet length on a super king bed.
Single & double duvets are 200cm long.
King & superking are 220cm long.
Would singles or doubles be too short on a superking bed? Who here has this setup and can confirm it works ok?