I believe Peter's posting has caused some misunderstanding in this discussion. First off, Shane's warranty comment did not state that using aftermarket accessories or tools would void a warranty. It simply stated that if those accessories were the cause of damage, then the repair may not be covered by warranty. This is typical for any warranty.
Separately, there is also some confusion about static. Static in itself isn't causing damage, and there is little risk to the tool itself. Using non-antistatic components doesn't necessarily pose any problems. The unique issue with the Dust Deputy is that it was placing a non-conductive break in an otherwise conductive path. If the entire path were non-conductive (non-antistatic) then it wouldn't be an issue. It is this break in an otherwise conductive system that poses the risk because it can result in a sudden discharge across the DD body, which is conductively connected to the vacuum. This discharge goes toward the vacuum, not toward the tool.