As much as I like the construction and design, after using it for years I have to say the Lezyne stuff is overrated. I have a pressure drive and a road drive, the pressure drive won't even get you over 6 bar with any reasonable effort. The road drive also doesn't live up to its (pressure) promise (but in fact no minipump does..). Both pumps are slow indeed, if you want a bit of air in the tube before mounting you have to (un)screw things 8 times before you are good to go.
1. unscrew hose from pump
2. screw hose to the other side of the pump
3. screw hose to valve
4. unscrew hose from valve
5. screw hose to valve
(pump 200+ times to reach an acceptable pressure)
6. unscrew hose from valve
7. unscrew hose from pump
8. screw hose into the other side of the pump.
But the really annoying part is when step 6 unscrews the inner valve from the tube.
Continental tubes have a habit of very loose valve cores out of the factory. Tightening the valve core by hand is not enough to prevent the above from happening. So if you don't take necessary precautions (i.e. you just bring along a brand new inner tube on your ride) you have a problem. If you are a bit rough tightening it with, say, a set of pliers, then you may damage the thread such that the hose doesn't fit properly anymore and air leaks out when pumping. This would probably happen with any mini pump but those do not require equilly tightened valve cores.
The hose idea is good, but getting a road drive up to 7 bar is not a comfortable exercise; the pump doesn't have a good grip and the metal end pinches the hand
if you don't wear gloves. The heat is also uncomfortable. In addition, the pump has a number of rubber parts which easily fall off and get lost at the side of the road.
CO2 pumps are a lot more user friendly and quicker so nowadays I also have the brilliant Genuine Innovations airchuck elite in my saddlebag.