Vedros Kit Questions

This question is about the contents of the new Vedros kits. I'm expanding my orks and can save a few bucks by getting Vedros gretchin instead of the regular kit. It's only two bucks but hey - I'm cheap. So, who has seen the Vedros Gretchin sprues? How are they different? I already know that the Assault on Black Reach sculpts are getting second life there, but wanted to specifically know about the gretchin.

I bought the Gretchin... the quality of the plastic is similar to low quality grey plastic scenery, but the models are 100% perfectly fine. It's a good buy.