Hi Novice,
Let see if I have this right ...
You have made a wedgie sled and are also considering building the sled I've shown in the video and are inquiring about the difference. If that is correct, I can help.
The purpose of the wedgie sled is to cut perfect segments so that they can make a closed segment ring without having to create and sand half rings. This is an excellent system but is not needed if you are going to make open segment rings because there is no possibility of making half rings from open segments. When making segments for open segment turnings, they can be off by 1/2 degree because it is the segment edge length (long side of the trapezoid) that stops the segment from sliding towards the center when using a SegEasy plate. The purpose of my sled is to angles that match whatever SegEasy plate you might have. The multiple kerfs on the PDF file simply let you select the one(s) that correspond to your SegEasy plates.
Having said that, you can still use your wedgie sled to cut segments for open segment rings, but since you lose all the benefits of using the Wedgie Sled, there really isn't a good reason to do this. Rather, you can use any sled and set the angle at the number of degrees shown in the software (5.5 degrees for a 24-segment sled, for example). The reasons to use my design is for speed and safety. It lets you cut 3 or four segments at a time and has a hold-down device that keeps your hands more than 3" away from the blade at any given time. If you typically make 24-segment open segment bowls, you can simply drill two holes according to the PDF file and leave the fence in that location and have that sled dedicated to making open segment bowls quickly.
I hope that helps, but please let me know if you have any questions or if I have mis-understood your questions.
Lloyd