Got these as replacements for my old gold ones which were somewhat rusty. I generally don't use the "screw on" types, but the experience was fair enough. The only problem I really encountered was some resistance to turning if you tightened it too much - and not a "smooth" resistance either, as in it is consistently harder or easier to turn, rather, different parts of the turn would be easy or difficult depending on how tight it was. Additionally, it's difficult to get the dots to line up correctly seeing as you're both screwing in it in (and hence moving it) and testing it every so often.
In summary, it looks rather swell, but has a few little problems. Would recommend getting something you can just push on.