I've also got the Lezyne. I chose it over the Road Morphe partly because it's lighter and tougher, being made of metal, but mainly because it clips onto one side of the bottle cage (you get a plastic thingame
bobbjig you put under the cage) whereas the Topeak IIRC sits centrally, denying you one bottle space. Doesn't look like being a problem this year, mind you...
Anyway, it hasn't had a huge amount of use but my experiences have been varied. A couple of times it's been great, though as Andrew Br said, the handle is too short to be comfy, but on one occasion I just couldn't get it to seal on the valve.
Luckily on that occasion someone lent me frame-fitting pump. The plastic clip has been a mixed blessing too - a couple of times I caught it in my trouser leg when wearing baggy MTB-style three-quarters, and the second time it broke the clip. I got a free replacement, which was good, but I'm not sure if they'd send another if it happened again. All in all, I'd say it's good if you dress sensibly!