greenmeadow,
1. If you had windows arrive at a jobsite unglazed, I believe that =may= be a problem with the window schedule, (or more likely, the contractor), rather than the hatch used on an elevation.
2. I can't speak to the exact staffing of MacWorld, but I do know we consider it more a "consumer" show than a "professional" show (such as AIA or others), and this may have affected the staffing. I do agree that any salesperson should be able to competently demo any of the products to an interested end user.
3. VectorWorks' viewports provide a very flexible way to provide live detail views. They do not take years to learn. With sub-features such as crops, annotation groups, viewing overrides, and advanced viewport options such as lineweight, arrowhead, and text scaling, we'll put our detail plan capabilities up against anyone's.
I don't know how you've trained on VectorWorks. There are of course several methods, and different people learn different ways. But I can assure you that "live" detail plans are one thing that VectorWorks does very well, and has only been improved with VectorWorks 2008.