This is the one I have too... works great for finding leaks and stuff, not so fun if you have to actually inflate a tire all the way. HOwever, I carry CO2 as the primary source of air and use this for finding the leak, mounting the tube etc. Fantastic.

The best frame mounted pump I've ever used was the Topeak Road Morph G in terms of ease of use. It's like a dinky little floor pump with a foot peg and all. I periodically had adjustment problems with it though (I mounted it next to my seat tube water bottle) and it would occasionally hit my leg, or drive down so that the crank would tap it... the Lezyne is invisible, which is why that's what's on my bike now.