I use this dust shoe: Z-Axis Independent Dust Shoe for Makita RT0700 RT0701. It works quite well if you mostly cut flat plates of wood (like in your picture above for example). I also printed the brushes in TPU, works fine.
The clamps to attach it to the center assembly were not that great though. They work, but especially the upper clamp is a bit “loose”. So I designed my own: clamps.zip (186.7 KB). Mounting the upper clamp requires you to take out one of the bolts in the center assembly, put the clamp in place, and put the bolt back the other way around. You need to loosen up some other bolts before you can take that bolt out, but it’s not too hard. Also note that the clamps are designed for M3 bolts and nuts.
My clamps also make it easier to adjust the height of the dust shoe, because a) the inner diameter of the clamps is slightly oversized, and b) the hex nut is retained in the clamp.
The clamps are designed to be mounted on the right-hand side (as seen from the picture above). If you want to mount the dust shoe on the other side, maybe you can mirror the parts in the slicer.