The thing I like best about my Space Pen is that it's tiny in my pocket, but it doesn't feel like I'm writing with one of those short golf pencils. Fisher achieved this by using an extra-long pen cap that goes 3/4 the length of the mini-pen when it covers the tip, but only 1/4 when placed on the butt-end of the mini-pen.

From what I can gather from their website (visual inspection and the vague copy "...a few twists...") the Inka's journey to full-size pen is somewhat more involved: a) Pull the mini-pen from the cap. b) Remove the silver part of the cap from the plastic bit that attaches to the keyring. c) Unscrew the butt of the mini-pen. d) Reassemble the mini-pen and the butt with the silver part in the middle.

I like the idea of having my pen attached to my keyring -- one less thing in the "take everywhere" category -- but if I have to choose between golf-pencil annoying and multi-step-assembly annoying every time I use it, I'll stick with Fisher.

Does anyone own an Inka? Can you confirm?