I have. Except for Shimano's grease, I've put EVERYthing known to man in a set of hubs or bottom bracket and still to date have never replicated the smoothness from Campy's ORIGINAL grease that my brother used to bring home liberally from Continental Bike shop where he worked (I worked at another shop that didn't have that much high end stuff). And no, the NB52 that Kluber puts out is not identical to the original Campy grease. It's close but NB52's pure white and my Campy grease was tan. I just got a tube of this Kluber stuff for an old Campy hub repack that's coming up here. I'll tell ya if this stuff makes em spin like a set of brand new Record hubs or not.

As a side note some of the things I've used to pack hubs and bottom brackets were the thick green/blue "waterproof" (bullcrap, NO grease I have ever used was truly waterproof. I work on cars a lot and experiment with grease on cars as well) marine grease, the cheap light green garbage Autozone "waterproof green grease", Honda's silicone grease, Toyotas silicone grease, Sil-Glyde, white lithium, Phil Grease, Phil oil, Lubiplate's stuff, Mobil 1 oil, Redline's synthetic 75/90, etc etc. With all that said, nothing spun as long as light weight machine oil in the hubs, lol. Granted the lubrication was probably insufficient, but for short trips who knows. I tried that as that was the rumor racers used to talk about in the 70's and early 80's. As a kid I used to hang out with the race crowd and over heard this stuff. Who knows if it ever reduced enough drag over time but I tried it lol. As far as overall smoothness for non sealed hubs, the OEM Campy grease was the smoothest I've ever felt in my life.

(I do understand that overall smoothness isn't even a function of lubrication at all, as it is the relationship of the bearings and races; in terms of total bearing roundness, smoothness of the races, either side's race being absolutely parallel to each other, cones being completely round, cone holes being bored and threaded completely concentric etc etc. but speaking in lubrication properties only is where I'm expressing an opinion.)

Edit June 2020. I packed some assemblies in that supposed OEM for campy, "Kluber NB52" and it is NOWHERE NEAR what Campy grease was when I worked in bike shops. This stuff not only separates like its it's job, but it's whiter in color and thinner than the Campy grease I used in the 80's. When I wiped out all the old grease on some of these old almost nos campy hubs I had here, and replaced it with the Kluber, they got louder, and I could "feel" it more in my hands when I spun them. When I packed these things with original campy back in the day I could spin them (cranks and hubs) and they felt like a set of broken in phil wood sealed bearings, which is to say totally silent and smooth to the point where you could close your eyes while they were spinning and you would feel NOTHING on your hands. That is NOT the same results I get when I repacked these bearings with the Kluber. Nooooooowhere close. I am not biased torwards Campy, as I'll use anything that works really well and I'm here to tell you this Kluber is not the same as the super smooth, tan campy grease I was raised on.