You ARE right though, about the advantages of field testing it - but you may also be right about the fear of it being proven a flop before its sold. And I disagree with you about the Vulcan Phalanx, better to say that Iron Dome is no substitute for IT, not vice versa! Like you said, the Vulcan Phalanx has been proven effective, and it would provide better, and cost effective, protection...especially to those places close to Gaza!
Middle East quartet reportedly set to meet during UN General Assembly (dpa)
from the article: What about the Iron Dome?