I tried this yesterday with an orange paster I had in my target bag. I attempted it 5 times and missed it every time, my front sight covered the paster completely. I didn't feel like getting out a slightly larger target, but as an accuracy exercise I liked this drill and will spend more time on it on other range sessions.
Beretta Elite II, OWB
Times:
1) 1.99 fail
2) 1.92 fail
3) 1.89 fail
4) 2.01 fail
5) 2.02 fail