When I interned at the Texas State Capitol we had an extremely strict dress code: skirts, panty hose, and dress shoes. The intern manual actually read "dress shoes and boots permitted. No wallabees." What amused me was the fact that they had to specifically excluded wallabees. Clearly, this must have been an issue at one point since they felt the need to single out wallabees.
I was flipping through the latest JCrew catalog last night when I saw wallabees. Not only are they apparently not appropriate for the work place, these shoes look like over grown baby shoes. Men, I would go ahead and exclude this from your fall wardrobe.