I have been wanting a fisher bullet ever since I heard it's part of Adam Savage's daily carry.
I was concerned about it saying "with clip" but I heard the clip is removable. Actually it is supposed to be pretty bad at staying on the pen. All the better for me, I plan on keeping mine in my pocket so I don't need the clip.
Let's get a great group price on a piece of spaceflight history! All of these pens can write from any orientation, in any conditions. Pressurized ink refills even prevent clogging, allow you to write underwater, and are available at staples. (In case that was a concern to anyone)