At this point, I have to be in desperate need for a character in my collection for seamless arms. They crack, they restrict posing ability, they discolor from bending. It's just not a good option because most companies are going to cut corners to keep costs down and not make them well.
I was desperate for a Clone Wars Ahsoka Tano, so I picked that figure up and just don't pose the arms, which is lame. And really kills my desire for any more figures with seamless arms.
As crappy as those arms look without the jacket, it's better that Claire didn't come with seamless arms. She'd be breaking within two years if you posed her holding a rifle or anything.