Frank, I was intrigued by this method for getting draft included and it worked great with the sweep. Once merged with the extrude, it leaves a little "hangnail"... a non-tangent transition between the ellipse and the circle along the edge. I created a sketched line to create the tangency on the surface and used it for a VSS between the line (origin) and the parting line ellipse (chain1). I drew a line in the section between the two "x"'s (trajectory intersections) and let it trim out that small triangle. Beautiful results as the sweep trajectory (origin) is not quite vertical so the "normal extrude" semi-circle, without draft provides nearly the same draft as the selected draft for the other half of the cut.
And yes, getting that little sketch to behave tangent to the reference can be tricky, but it works.
This is indeed a great way to ensure draft on all faces of this type of feature. ...until such time that we can extrude in a direction other than normal, that is. How is that feature coming along, PTC? 
Frank Schiavone wrote:
Here's another take on it. Very similar to what Antonius did in the "silver" model (from the pic, I can't open the models). This gives a very close approximation of the hole, with a slightly more complicated shutoff. It's funny, I first didn't understand why it "lobed" the hole (as it did in his pics too), then I realized what the VSS was doing, and think it did exactly as asked.
