Yes, that one. When dismounting from a stationary bike I have a lot more control of the leg that is swung over. The one time I knocked off the pannier I was doing a cowboy mount, of course there were people there who witnessed the whole thing. My backpack only sits about as high as a rack trunk anyway. My bike is road bike anyway, so being concious of the panniers is always necesary. There is pretty close heel clearance which is only an issue when I'm not locked into the pedals. Anyway, the grocery carrier works well for me. My only complaint is when you have it folded out and there is something small in there, like a six-pack of beer, it can slide around. When it is folded you can still carry a u-lock wedged in there or some small items. Also the nashbar bags have small pockets underneath that hold the included rain cover and have room for a pump, tube, multitool, etc.

Here's my bike, sorry no pic of the backpack on there.: