4 Sets
12 light reps with 3 second slow count descend each rep
10 heavier reps with 3 second slow count descend each rep
10 heavier reps with 3 second slow count descend each rep
8 heavy reps with 3 second slow count descend each rep

Note: Start out light, probably empty barbell, to get a feeling of this grip style. Increase weight each set to a heavy set of 8 as you get comfortable with this movement. Rest 90 seconds between sets.