You would not be able to parry the leg hit because your swingin blade would be on the other side of your body. I said hit, not move. Toast. Crispy toast.
Who said anything about a parry? I said "void" the leg shot, as in get my leg out of the way. In rapier terms, think inquartata or forward slope pace, depending on your attack. In that same time, your extended arm would be exposed to a counterstrike in half-time. My blade, held in high guard, would not be on the other side of my body, but ready to intercept the advanced, low directed arm. Stump. Bloody stump.
I love it when my opponent obligingly makes his first attack to my legs, especially when using a form where you haven't a secondary for defense while your blade is forward and low. Please don't throw me in that there briar patch!