That sounds good. IRL, my experience has been that a poor drysuit fit/cut can result in the suit squeezing onto me in the water where, for example, the torso material does not want to slide up my body and that restricts my reach up and back - and it's a restriction that doesn't happen when I'm on land and the suit is loose and free to slide up and down my body.
In that particular example, I think it's a result of the sleeve/arm hole not being cut right or fitted correctly. If the bottom of the arm hole (i.e. the armpit) is too big/low, then reaching up necessitates that the suit torso also ride up.
In that particular example, I think it's a result of the sleeve/arm hole not being cut right or fitted correctly. If the bottom of the arm hole (i.e. the armpit) is too big/low, then reaching up necessitates that the suit torso also ride up.