Using this thread for opinions about "formal pipes".
What did you buy in the end?
My 2 cents about pipe for formal occasions, or what I do: Color is not as important as shape. All straight smooth billiards are "classy", because they are classic. You bring the image of Faulkner, Cary Grant, Gregory Peck, Bing Crosby, Errol Flynn. The epitome of men elegance used straight billiard or canadian.
For your dinners, they have also other advantages: The pipe fits well in the inside pocket of the suit jacket (actually, if it has a pen pocket it's perfect). Another thing it's that you cannot expect to do a 1 hour pipe, even if they smoke. So a small bowl like the ones in billiards is just perfect.
About the tobacco, I use a silver box for business cards with some flakes in it.