We had a pard moved to our area from New York. He explained that tin the New York club, they had a one pistol category for folks that either didn't have two or wanted to shoot just one.
As to reloading, most of us are pretty slow at doing a full pistol reload - except the top shooters of course. So that normally slows down the pace quite a bit and except for the fun of watching fumbles

, most folks get tired of it pretty soon.
So the idea of a single pistol category is a good option, especially at local matches. But it wouldn't have to be the classic category, because many newer shooters may not want to start off shooting duelist style.