I like them too! This is my top favorite pen kit as it has survived aver a month without even one "issue" due to design on the kit. Yes, I find many kits have these, sadly more so in the higher end kits I think. I personaly no longer make the CSUSA kits in the Gent/Statesman (& Jr.) design. Too many issues with the CB, coupler and nib holder. Sadly, most of their kits use the same. I am kind of rough on pens, and have one in hand for hours a day mostly outdoors. The Churchill is one of the few that has held up with no problems. Second in line is the twist Americana, but I dislike the sharp edge ring at the nib.
Next in line is the El-Grande, although I am not in love with the look really..