FWIW - question - do you like the design from an appearance standpoint, or functionality? My experience is that metal knobs (it looks like it's metal) can be burning hot and freezing cold, and suck. Also long narrow knobs like that are simply uncomfortable for holding, too. Whenever I swap a knob I make sure it's 1) leather, and 2) shaped perfectly to wrap thumb and fingers around comfortably with my hand in a natural position. I bought my 1-er with a knob like that and it didn't take long for me to swap it out.
Not saying you shouldn't get it or don't know what your'e looking for, just recommending you be sure that's what you want.