I agree with those who say it's the attitude to money that is more important than the type of account.
We have both. He works away a lot and often has to spend his own money and claim it back, food, rooms, petrol etc. He may also use his CC to cover something. It is fairly standard practice and he is reimbursed very quickly, none of this waiting until the end of the month malarkey. So he has his own account and CC so that he always knows he has the money and no surprise bill etc will catch him out.
So I have my own account, my salary used to go into it, I am self employed now, so I also have a business account. I have access and 3rd party mandate, for all of his accounts and I sit and shuffle money round to pay CC, bills, savings etc. I have always done this as he has always had 'out of hours' work and online banking didn't exist in the 80s. It's a habit and it works for us.
We don't have his and hers spending money. I don't understand that. We just spend if we have it and don't when we run out. Big purchases go on a card and I pay it off at the end of the month. All money is most definitely 'mine'
and I put it were it needs to be, including maintaining the balance in his account experience tells me he needs. I do the same for my own, of course, but it is a lesser balance, of necessity. But that doesn't mean I have access to less.... just that I need less sitting 'on account'.
But I can hear the screams from here 