I don’t know how they work, but work they certainly do.
If you do decide to try them, you’ll need to ask AudioT for studs with thread size / pitch 12 X 1.75, since the calculator on IsoAcoustics website is incorrect, assuming the threads on your XL10s are the same as on my MF9s.
Give the ever helpful Bob Surgeoner at Neat a bell, maybe?