Absolutely lovely work!

Your paint scheme is great too. My old DIY chapter was orange with blue as well; they're a great and eyecatching combination of complementary colours. Any intention of giving them a chapter symbol?
I really love the last picture with the effects too; a perfect, atmospheric shot of those man-turtles in action against everybody's favourite grim-dark insectile aliens.
Between your metals and the 1st ed Space Hulk plastic Termies posted here some time ago, it's getting harder and harder to resist the pull of some retro terminator project of my own...
