3rd on the graphtec (I have the CE-7000-60). The cutting channel works great, and like jharler says get 2 blade holders. I use a 45° for the usual contour cut, then swap to a 60° in the perf channel for that second operation. Protip: make them 2 different colors for easy ID if you do that. Also, there's a 3d printable blade holder clamp thingie that made swapping super easy, one is short for the front blade holder and one is r for the rear and you can just easily swap back and forth in a few seconds that way versus having to turn the little screw holder way in or way out. I can't find the link right now on Cults3d, but the it's called "Quick Swap blade holder for Graphtec FC9000 and CE7000".
Here's the holder already printed, but the STL file is out there somewhere:
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