Yeah I got into the SCA my first try at university in 1979. I really liked the shire I was in because no weapons were off limits including flails and archery and we practiced fighting as a unit more than anyone in the area. Whenever we went to events we were never put in the shield wall but instead formed a wedge to break through or turn the flank of our opponents. Since everyone else was to busy training for "knightly" individual combat we would kick the crap out of them when the war was on. If we could talk everyone into using archery (usually had to give the other side half our javelins) we would fight as skirmishers. And since no one else practiced with archery we cleaned clock there too. Still not as fun as breaking a shield wall as the point man of a wedge.
Everywhere else I've looked at since then is just to individualistic for my taste.
It was great fun and sort of makes me laugh when I see movie battles between two guys in full armor going all out for 15 minutes. I’d like to think I’m fit but I doubt I could have crawled over and bitten the other guy after that long in single combat.
It is as you say "Great fun if you have the time." As with most things for me, it was probably more fun before to many people got involved. The egos back then were interesting no I imagine they‘ve gotten even more interesting by now. But I might go back to some form of reenacting when I retire. Roman?
P.S. Ooh look, I managed to get 3 posts out of my replies.