Nice work. The Assault squad is very bright and bold, but looks very good.

The chaplain I like - partly because of the old-school model, but you've done a good job of making him look the part.

The librarian is I think the most impressive paint job, but unfortunately, the one I like the least. I like the winged backpack, and I think your freehand jobs are really good. It's the yellow that I don't like. The chapter specialists often struggle to look like they belong thanks to their specific colour schemes. Normally you can get away with it if it's just one colour different - black for a chaplain, white for a medic, blue for a librarian, etc. But the yellow (although it's well painted) is another bold colour that is not red, in addition to the blue. I personally feel this makes him look like he belongs to a different army. I think a neutral white / creme / khaki colour on the robes would have suited much better.

Thanks for posting the pictures though. It's really nice to see other people's work, especially when it is such nice quality.