I really like how Lezyne interfaces with the tire. Rather than using a leaver, Lezyne uses a threaded chuck. This is not only a better interface for inflating, but it also doesn't feel like you are going to rip the valve stem off when you remove it.
This thing is like functional art, just what bicycle or bicycle product should be. I almost can't wait for a flat to get to use it. Silca made it common sense, smaller than its competitors, and easy to use. Perfect.