I have a real use case for its application - to model a flex geometry wrapped on a rectangular staright/tapered plastic insert.
With further expansion of the approach, the slant angle I added to the sweep section allows me to produce both straight and tapered geometries. This can be converted to a sheetmetal model and can be flatten to show its flat geometry !
...now put a parallel one outside this one.
Use the second one to orient the "blade".
This will clean up the corners somewhat.
Here is a solution using just three features.
It works also as conical version.
It was created with Creo 3.0. If you can`t open it I also can provide Creo 2.0.