As of August 12th, the following states have adopted the 2005 NEC, which includes the new aforementioned Article 409 for the first time.
North Dakota, Massachusetts, Colorado, Idaho, Nebraska, New Hampshire, North Carolina, Ohio, Oklahoma, Oregon, South Carolina, Texas, Washington and Wyoming.
With the exception of Mass. and Ohio, hardly the largest population hubs nor the epicenter of the industrial world (appologies to Texas, but let's be realistic here). Most likely the reason you didn't get a lot of response was that it is not yet an issue that many people in the trade need to deal with yet. So in effect, that IS your response.
