Thinking about B&W

[pathfinder]

I walked out the door this morning and I saw the sun light and the shadow falling across the roof of this building - white panels in sunlight and black roof with white frost in shade - and I wondered if I could capture that digitally and what it might look like as a B&W conversion
color from RAW
http://pathfinder.smugmug.com/photos/15210526-L.jpg


Here is the B&W - not sure it is as good as the color though.. Any comments?
http://pathfinder.smugmug.com/photos/15210529-L.jpg

[fish]

Perhaps if you bumped the contrast, it might be more compelling as B&W, but I kinda like the blues in the first version.