I love the mag switches!

I haven;t tried to do any custom stuff with just the switches, but have a "Mag Switch" brand feather board. Only dislike is it can't get close enough to the TS blade when trimming narrow parts, trying a sim cut to make every part the same width.
The throat plate (non-magnetic) happens to lie directly under one of the feather boards magnets.

I do save oddball RE magnets from deal hard drives, excellent guides/stops for the bandsaw, they can be slid off by hand when done and stuck to the frame or table side so I don't loose them.