The present Mrs Hughes never did get to have an engagement ring - we were never really 'engaged' as such - we decided to get married, organised it, and did it.
I bought her an eternity ring on the birth of our third daughter (my biological offspring).
She wears her wedding ring all the time, never takes it off, and her eternity ring the majority of the time. When she is abroad working - as she is now - her eternity ring is on all the time.
I have a wedding ring which I wear all the time - I take it off in the bath when i remember, but that's the only time.
I would be upset if my wife wore inherited rings in place of the rings I have given her, which I feel are of significance for both of us.