Anyone tried the UST Frequency Filtered Shaft?

I heard it delivers true roll, is it true? How it works?

Thanks.

Yes, I have tried it.

It does not change the roll, but it does change the feel and increases the swingweight a few points because of the graphite butt section.

It is nice if you like a shorter putter (parallel butt section makes gripping easy) and/or if you want to re-shaft an older lighter headweight.

If you have a soft and solid putter, however, the UST FF may actually detract from the feel.

This shaft has it's place, but it doesn't belong everywhere. My $0.02.

Yeah, maybe it's only a lot of marketing only. Tnx for the info.