I had a pair of middle aged Shropshire ladies (see avatar) - only sold because I moved house.
They were very easy, one had twins and one triplets with no bother, they were just waiting for me one morning. All lambs grew well.
They (the ewes) were a bugger to try and turn over - like trying to wrestle a cloud. They were partially trained to have their feet looked at like you would a horse. No major problems with feet.
They needed a bit more TLC than the Hebrideans I'm more used to - needed more hay over winter, and needed a bit of dagging. And an odd trim of wool from around the eyes. The lambs weren't quite as precocious as the Hebs (in other words - I could poke, prod and generally harrass them, as opposed to chase them with a crook in the vain hope of tagging...)
Last show/sale I went to there were far more MV acreddited flocks than non-accredited, and they were also working on EBVs (estimated breed values) and other statistical thingummies. There is an export market for them too, particularly to plantations of e.g. christmas trees.
Hope that helps a bit!
Oh - they're supposed to come out black, it had me worried for a bit!