I carry a Cross Ion pen in my pocket all the time. Well designed for pocket use, since you pull the two ends to get the tip out and there’s just no way for that to happen on its own in your pocket. Caps can fall off, especially if they snag on something else in your pocket, and getting ink on your pants and your hands is just terrible.

Looks like maybe Cross is phasing out the $25 plastic Ion in favor of the $50 metal and leather Autocross; or maybe just not the inexpensive pens on their website anymore.

Ion: http://www.cross.com/catalog/pendetail.aspx?catname=Ion+Pens Autocross: http://www.cross.com/catalog/pendetail.aspx?catname=Autocross+Pens