Does anyone use them? I did a quick search on the forum and couldn't find anything. I am looking to use them for both front calipers, the rear caliper, and the hydraulic clutch.
I actually bought a set (of 3) for one of my sport touring bikes years ago but never installed them. There was so much back and forth on the safety concerns that I decided to err on the side of caution and bought a Mighty Vac for easy bleeding. I doubt the Speed Bleeders have actually ever cause a brake failure (?) but the they do depend on a spring loaded check valve of some sort to prevent a fluid leak whereas your OEM bleeders provide a solid stop.