I use a Geneva bulk tape eraser (about $80) to demag my LP's once after I clean them on my Loricraft RCM. I notice a definitely audible drop in noise floor. The process takes me about one minute, only once, and I find it worth the effort. I would not pay $2000 for the Furutech choosing to put that money toward a better RCM instead.
I have not tried this on Classic Quietex clear vinyl. Lloyd Walker told me directly at RMAF during a demo of his Talisman that his Talisman is more effective on clear vinyl than it is on black vinyl. He also told me that his Talisman works for only one play of the LP and works better than a bulk tape eraser used for demagnifying an LP. I've never compared my Geneva to the Walker Talisman.
I have not tried this on Classic Quietex clear vinyl. Lloyd Walker told me directly at RMAF during a demo of his Talisman that his Talisman is more effective on clear vinyl than it is on black vinyl. He also told me that his Talisman works for only one play of the LP and works better than a bulk tape eraser used for demagnifying an LP. I've never compared my Geneva to the Walker Talisman.