Although for most of our working lives, and now that we are retired, my husband brings in far more money than I do, we have always had joint current and savings accounts, even before we were married. On the whole, this works quite well because I don't have extravagant tastes and would not spend a significant amount of money without discussing it with my husband first. In theory this applies to him also although, in practice, whatever the outcome of the "discussion" - he tends to go ahead anyway! To be fair, I am more pessimistic and cautious than he is and the house alterations which we have made, and which were probably well worth doing, I would have been too indecisive to go ahead with, ultimately to the detriment of our home.
The idea of being allocated a set amount of "housekeeping money" does not appeal to me at all. Although it could result in a very generous allowance, it seems to me that it also takes control away from one party, and could result in the person bringing in the most money also allocating themselves a much greater proportion of the income. Personally, I would find that upsetting though I can see some people might feel quite comfortable with that arrangement.