A couple of brand new Jotters - one FP and one Rollerball.
The lighting is awful, so you can't even tell that the rollerball has gold clip, while the FP has chrome (unless you click the photo to enlarge). And though I much prefer the stainless look, I wish now that I had gotten one of them in a colored barrel for easier differentiation.
I included a few common pens for size comparison: Pilot G2, Jotter FP (Medium), Jotter RB, Jotter BP, P45. They're on an A5 Rhodia pad.
I really like these little suckers. They're ridiculously light for "all metal" pens - thankfully, the black sections are plastic. While long enough to use without, they have a better weight when posted IMO. (see also P45, now that you mention it) The medium FP is smoother than my Fine P45s and surprisingly comparable to my Flighter's gold medium nib in smoothness and line width.