A little while back I posted about doing angled dovetails at the bandsaw. It works!
My main goal was to make a drawer where the front was at an angle, one side of the drawer longer than the other. This will fit a natural edge top that I want to use. In the Leigh angled dovetail guide this is similar to example #3 except instead of both sides flaring out one side goes out and one goes in.
It's done with two wedges, the bottom wedge matches the bevel angle on the boards, the top wedge is the dovetail angle. To cut off the pins the bottom wedge gets turned 90 degrees.
And while you've got the bottom wedge turned that way, you can also do this other type of angled joint:
I'll post more details if there's interest when I actually have a full understanding of it myself. Cutting one joint is one thing, cutting 4 that all assemble into something is another.
-Leuf