I've got a pair of boars, and two herds which consist of two sows and a neutered boar.
The only experience I've had of an entirely sow herd was Annie and Ruby - and they were not entirely harmonious! Annie(under a year) is just too bouncy for Ruby (2-3 years) but when I introduced my boy Squeeky everything seemed to settle down - as now Annie can't spend all her time bothering just one pig! She is throughly in love with Squeeky who seems to enjoy the company. And Ruby can nap now without being bothered, although gets to retain her queen pig spot.
I got Squeeky neutered when his cage mate Patches died - as I did not have the space for another boar couple, and while Squeeky enjoyed his holiday with Teadragons boys, I had the gut feeling he would never accept another single boar as a friend as quietly and happily as he was with Patches. The two of them used to snuggle up together and drink from the water bottle at pratically the same time.
The other mixed herd is Father, Mother and Daughter. Getting Humbug neutered was the only option - he's very other boar aggressive, and simply adores Emily! They came into rescue as a breeding pair, and it seemed a shame to break them up (and keep Emily preggers!) so when HUmbug was seperated pending the babies arrival, he got the chop. By the time babies were born and weaned, he was ready to move in with his wife and daughter.
While he was single he was a grumpy, miserable, difficult pig! He used to trash his cage, bite everytime you went to pick him up.... Now living with his family he is so much more chilled out. Once upon a time I tried introducing Ruby to this group - no dice! Emily would just not have another lady making eyes at her man! A lot like your lady Laura - I think Allsorts is allowed to live there as she's never been apart from mum!
I do love my bachelor boars though - they're messy, smelly (boar glue everywhere! D=) they're so boisterous and certainly sleep less than the contented married men
