When ink in a tube just wont cut it, go all out with a Fisher Space Pen Bullet Pen.
Aesthetics aside, this is a great EDC pen. Its super compact in the closed position but you get a full-size pen when its open. The pocket clip and ink cartridge are replaceable.
In true Fisher Space Pen form, this pen writes at any angle. Even Zero gravity. So take one of these pens as part of your Everyday Carry for your next journey into outer-space. Or the store.