Chuck,
If you go back for more tries maybe you can combine the suit and tie with an more relaxed pose. I think this combination can be very effective.
I would also encourage you to find a more controlled environment, possibly your home or his, but somewhere where you feel comfortable and feel that you are doing "portrait work" not computer work. I have places that I go back to time and time again. I think this gives the client a sense that you take your mission very seriously.
Create a scene that suggests your vision from edge to edge (should be done before your client arrives). Make it your goal to create a suitable photographic portrait, foreground, background, and in between. And then within this environment you can alter your pose. Do the suit, then do a lelaxed type in a sweater (not the business shirt buttoned up).
This guy has an interesting face, could make a nice portrait. Oh yes, get a tripod, you can find them at Wal-Mart for not much money.
And then if you really get bored you can read this post:
http://forum.portraitartist.com/show...=&threadid=958