I wanted to compare my Phicen seamless bodied figure with a Gumby-bodied action figure, but I don't have one. So I'll compare her to a Dance 'n Flex Christie (Gumby all the way).
The Phicen figure has rubber skin over an articulated "skeleton". She is articulated the way that most action figures are articulated. She has trouble holding some positions because her rubber skin restricts some movement. It can bunch up at certain points (I'm looking at her underarms right now). Also, you have to be really careful about posing her, because she will break if you try to bend her where she's not meant to be bent. Christie has rubber over wire, and you can pretty much bend her any way you'd like (that is, of course, until the wire breaks).
The Phicen can stand on her own and she looks more natural. The Barbie needs help to stand, and she has spaghetti arms and pancake hands.
The next photo is so horrible that I could not bring myself to post it here, so I will post a link. Brace yourself before you click here. The Phicen figure now has a hole in her upper inner thigh. Christie has a crack on her rear (no, NOT the one that belongs there). They are both lint and dust magnets, as you will see. How am I supposed to clean these things, anyway?
Overall, I like the Phicen much better. I think that she has a more natural look, and I think that her articulation is enough to achieve most day-to-day poses. I will not be attempting any extreme posing with her. Lesson learned.
The Phicen that I have is an older figure. The company has improved on the design and the new batch will be released soon.