The referenced article was from the Oct 2005 issue. It's an interesting read, but not analytically well-grounded. The author used a software tool to compare (simulated) performance of two (simulated) receivers in three (simulated) RF environments. (Detect a trend here...?)
His conclusion was essentially that the military receiver performed better in a GPS jamming environment. Yeah, I'll buy that - I also fit a conclusion like that into the "blinding glimpse of the obvious" bucket. It's also not relevant to the situation in Iraq or Afghanistan. Interestingly, the author makes no citations or examples of real-world cases where civil GPS units in theater had issues - his is a purely hypothetical piece.
I think the takeaway is that for safety of flight/life applications, you should stick with the mil issue. For backup/interest/entertainment, I don't see an issue with using civil systems.
BTW, the Garmin 60CSX is the shiznit. You have to pony up extra $$ for the map reference base (not that it would help you any in Iraq), but it's a great tool/toy.
I wondered about that. Couldnt' access the article from home, but "knowing what I know" about GPS signals and the FX of jamming, I would have a difficult time buying the premise.
Brett