Shit picture but here's a shot of it beside a figure done in standard metallic, obviously if you're looking for a more worn and rustic look it's too much, but it looks pretty good if you want a figure to stand out. I am happy with the overall result, anyways.

You can also use the chrome for subtle highlights on regular metallics. The pens have a 0.5 mm head I believe. AK also makes a loose version of the chrome paint that you can airbrush or brush on. Brush doesn't work too well from what I hear. If you want to get a more realistic metallic with just a brush and don't I'd recommend the AK true metal series. It's a wax that you can polish when it dries and is very convincing. Also has the advantage that you can really polish certain areas over others.

I'll do a post on some of that stuff in the future for you guys have a good one