if a person twists his torso to one side, the lace/buttons/whatever down the front should reflect the torsion of the body - on these, the stuff runs down to the hips when the torso is turned to the side, looking totally unnatural to me
It appears to me to be the case that the torsos and legs are separate pieces, which would explain that. I agree, it's a bit unnatural-looking, and I guess the trade off (sort of? If you can look past the lack of shirt twisting) is increased posability. Sort of a perennial problem with plastics - increased options for posing, but many of those don't look natural.
Anyways, I'm much more interested in the heavy cavalry, and am still optimistic about those, since I've generally been impressed with other GB plastics.