Thanks for the responses. There is very little that would be different using Photoshop's B&W conversion tools versus NIK's SilverEfex Pro. But I find that the NIK software lets me work a bit more intuitively. In addition, the left-hand column of previews showing how my image would look with different settings gives me a good way to pick a starting point.
I will try to locate the color rendition of the image and will post it when I do. While I like it too, I think the color breaks the mood to a degree. That is odd for me to say, as I usually go for big color statements in most of my work.