I didn't use that particular brand, and the pic shows the drop and proximity to the pipe on mine. Per your question, I can drag the front outside part of my left foot on a very hard turn. A lot depends on how wide your foot is too. Mine is a 17 regular. For some reason, I can't drag the right side, but most likely that's because I am left handed and left turns are more natural.
Another factor is the height of your ride. Mine was lowered and I raised it back up 3/4'' in the back, but it's still way lower than stock. I got tired of having to dodge even the smallest of ripples in the asphalt before I raised it. The ones in the pic are strong. I am 310 and tried to break them after I put them on and couldn't. They will take more than my knees will.
FWIW, If you can stand getting ribbed over a seat, add some foam to it. That changes the distance to the pegs and makes it easier to swing my feet up and on them. It's a comfort thing, but style wise, probably not the best. It's easy enough to swap a seat for long rides if that bothers you though.