I was curios and decided to try somthing. Itook the k1 extruder with cfs cutter and adapted it to the Ender 3v3 core x/z. I removed the cutter and lever then just installed it on my extruder motor.
I used the wiring diagram from the K1 extruder upgrade from Printables to wire it .
Works great just sticks up a little bit and now I dont have to mess with the lock and have filament detection in the tool head