I have, but not that one.
Their Lo-cap silver stuff is 55 pf per METER, not foot. That's lower capacitance than the Van Damme XKE (less than 18 pF).
The Medium cap one at 90 oF per METER translates to a cap per FOOT substantially lower than Mogami, Canare and most other cables. Mogami, for example, is close to 50 pF per foot.
The Hi Cap one is about comparable to Mogami. So it's not all that high cap.
I've used cables with higher capacitance as measured by my former studio tech. Didn't much care for them.
I doesn't matter to me what a vintage cable would measure. The only thing I can control is the now; can't change the past, can't predict the future. So I like what I like, now.
I started gigging in 1966 and had plenty of experience with the old stuff. Including the 3 curly cables going to my early Vox wah, Maestro fuzz, and '67 Black Panel Bassman head and cab. Capacitance was probably off the charts. Probably lacked high frequencies, but...
I made up for it by playing at very, very loud volumes!

Today you'd get kicked out of a club playing like that.
We didn't know any better. We didn't even have the bright nickel plated steel strings that came out a couple of years later.
We ran the PA for vocals only, and didn't mic up the cabs. We just cranked 'em. It's different now, even live, let alone in the studio. Different context entirely.
In fact, bands would play arena gigs well into the late '60s with only the vocals going into the PAs. That's why you'd see players with multiple amps on a stage. Even loud bands like Cream (who I saw live). They needed them!
I've been recording my ad music work professionally since 1989. It's nice to have high frequencies when I want them. And when I don't, there are tone controls -- I use them constantly while playing.
So yes, I'd rather have the option to determine the frequencies I want to hear for myself, instead of letting the cable make my choices.