Love the second shot there Doug, absolute corker.
I love the way these shots meddle with our sense of scale by isolating and simplifying the subject (by no means appearing "plain and simple" though!). The lighting and strong, vibrant colours are just perfect for the subject at hand too.
I like the first shot, but I would be interested to see a re-shoot with a more dramatic sky. I enjoy it as is, but something makes me long for a little bit more of a textured and contrasty sky - I do like generally dark B&W's as a rule of thumb though - so I may be biased!