Those Toy Fair pictures look awesome, but alas... they're prototypes. I will say that the production Stalker and Snake figs look good from what I can tell.
Here's something I've noticed though: what is it with these pukish palletes they're using? Take a look at the base yellow color on Snake. It's so paint-ish. Looks like something I'd coat a house with. Not sure if anyone understands what I'm trying to say, but the previous Boar figure has the same issue (so does Shaman, technically). The colors themselves simply look ugly on the figures, sloppiness aside.
It's almost like they didn't put any effort into even choosing and mixing the proper tones. The armor's been fantastic, which makes the skin quality stand out that much more.
Boar paint on the body is a little ugly but I quite like the colour of Snake.