As near as I can tell, the Dunlop DVP3 use a band to control the taper settings of the pedal.
Whereas (from my familiarity) Ernie Ball pedals use teflon strings.
Again, I read somewhere the DVP3's control bands loose their integrity somehow which could lead to failure.
Unlike you, I'll probably be getting mine on-line and I don't really want to bother with defect exchanges.
edit: To put this all another way, as much as I very much admire the DVP3's impressive functional features, it would never be at the expense of a product with lesser base integrity. (if that turn out to be the case)
Moreover, I'd always favor a robust product design which could support repair over replacement.
By design, Mission Engineering products standards are looking to be a better fit for these needs. IMO