I'm actually in the same boat as you. Like exactly the same! I bought a bunch of the same Kasrkin models to use with the old daemon hunters codex and about 20 old GK and 5 TDA GKs. This was like 3 years ago and I have never finished them. So then the new codex and models came out and I bought even more and got a bunch for my b-day from co-workers (they make fun of me but also support me too) and now when I go to paint them in the traditional silver I find that I hate it and I'm bored. I was actually thinking of doing the same kind of paint scheme that you did for GKs!! But I have to asked, what is a "knackered brush" ?