Curious to know if anyone here shoots weddings using a 501CM with film backs?

I am loving my Hasselblad 501CM but am finding changing rolls every 12 shots to be a little tricky, especially when under pressure. I've not used it for a wedding or anything like that, yet, but if the opportunity arises, I intend to do so.

When I got married, back in 2002, the photographer used a Hasselblad (though I don't know what sort - I didn't know much about MF then) and seemed to have no problem taking the 250 shots we'd agreed in advance. He may well have had a stash of pre-loaded backs but for 250 he must have had 20 backs!! Surely not? Having looked up the cost of second hand backs, they're about 350-450 each!