Reminds of me that table saw that stops in an instant when it comes in contact with a human finger. They tested with hot dogs to simulate a human finger (although the creator does use his own finger). http://www.youtube.com/watch?v=cTUOhYcw4ZY
The touch pods are pretty annoying, because they're flat raised discs -- they only work when flat against the glass, and noticeably poke into your fingers whenever you wear them.
It should be noted that any relatively thin glove made of wool or synthetic fiber lets you still manipulate an iphone screen (at least when there is an anti scratch protective barrier). There is no need for conductive fiber or the like!
I wear some old leather gloves that have the cloth lining worn off at the fingertips. They work well and are probably warmer than thin mesh gloves. As long as the leather is in direct contact with skin it should work.