Hey if you are one of the last to jump on the older stle Nomic's in late summer or fall of 2010 you may have scored more than you first thought.
I bought a spare tool recently for a trip and wanted a mate for my original pair of old style Nomics. Found a few on sale and ordered from a small retailer the last one they had in stock. It showed up and to my surprize the head was the new version which is able to take the newest Petzl hammer and adze. Pretty cool bonus from Petzl.
Not that big of deal because I use the C-T hammer. Not everyone's choice so I think it is very cool that some of these older tools made it out with the factory hammer option available. I really like the new, and bigger, carabiner clip in the head. Makes it much easier to rack the tools on a biner. Win, win on this one.
Check out the head differences on your tool if it is a recent purchase (Fall of '10) and a old style Nomic.