OP As far as the Fisher space pen goes they are pointless.
Get a Zebra F-701. They run about 8 bucks at staples. Then buy a fisher space pen refill. You take a small plastic spacer out of the 701 and BAM, instant stainless steel space pen.
http://forum.multitool.org/index.php?topic=13351.0
This will cost about 1/4 of a normal space fisher space pen.