I know I'm extremely late to this party, but just finally got two of these pens, one in EF and one in M to compare them. (I had them thrown in a box of other things I was shipping from China, so got them for $7.50 each, K1 converter included. And they threw in a free red Kaco Pure gel pen.) I can't compare them because I haven't put down the EF since I picked it up.
Unpopular opinion: I like the clip. It levers open for me easily pressing on the back, but I might have ape hands. What I really like about it, though, is that when I clip it, it stays tight and straight, with the blade of the clip rigidly forward and looking ... Well, I'd say "sharp" if it weren't called the Edge and I hadn't described the clip already as a blade. (I can see how it would be basically unusable under a seat belt.)
I was gun-shy on getting this pen because the only other Chinese Schmidt holder I had was the Moonman M100. The only thing I'm really satisfied with on the M100 is its looks (which, admittedly, are stunning). I can't recognise any shared heritage between the two nibs. I'm willing to accept that I got a bum nib on the M100, but replacing it wouldn't elevate its writing experience enough to make it worth using often. All of which is to say that the EF on the Edge is way nicer than my F on the M100.
My annoyance is that the studs that lock it into the cap are positioned exactly where my thumb and forefinger rest on the pen. And twisting the feed and nib wouldn't help, as that'd just put one of them where my middle finger rests, which I'm pretty sure would be unbearable. I never have trouble with threads and rarely with step-downs, but these little studs are going to take some getting used to.
I hope I like the M as much. I also need to sort out a faster way to tell them apart without yanking off the cap and inspecting the nib.
Edited by JollyCynic, 17 January 2019 - 10:26.