Obama Skipping Nevada Debate?

This from Hotline:

Jon Ralston reports Sen. Barack Obama (D-IL) will skip the 2/21 Carson City Dem forum, and will actually be in IA on that date. Obama will be in NV a few days earlier, however, on 2/18.

This is a bold move by Obama's campaign. This could be a great strategy to set him apart from the other candidates, or it could backfire and make him look arrogant or unprepared for big stage scrutiny.