Yeah, you get lots of stuff at SDCC that isn't finished yet.
I love SE's Play Arts Kai range - in fact, it's probably the one range of figures that I would probably say is straight-up better than NECA figures (for 3 times the price, but still). A PAK Alien would typically be a dream come true, although admittedly these are more than a little bit off. Trying to think of them as new interpretations of the Alien, rather than being based on the video game designs.