Kev's a North Star staff member, has been for a few years now, which is why most figures are done by him. But just because of the sheer volume of new figures we get, the likes of Andrew Taylor, Roy Duffy, Dave Woodward and Chris Adcock pitch in as well.
Kev has moved onto AP paints for a few reasons. After Foundry ignominiously stop employing him a few years ago, both he and I are hardly falling over ourselves to promote their products. Especially when it's 'from us only' type products. I think if Foundry paints were as readily available as AP paints, we'd have a different opinion. And linked to that, we stock AP paints so can keep him resupplied, rather than buying from Foundry. And I don't think his work has suffered. In fact he admitted, the three paint style was making him a little lazy, and moving to AP Paints meant he upped his game a bit.