Dave, I would have said the same thing about lowering the reps as recently as a couple weeks ago. But recently JB had me do 10 rep front squats after back squatting and I gotta tell you I was sceptical to say the least, but it does hit your quads even with lightish weights, helps hone in squat form, and I think his idea is doing the combo on back day is to fatigue his back with the fronties as well as hit some leg work. It's good conditioning too.
I say give it a whirl and see what happens. If it doesn't work drop them like a bad habit!
I am Anton Zdravko Martin!
Best meet lifts: Sq 150 Kg (330 lb), Bench 120 Kg (264), DL 160 (352) @89 Kg (197)
Best gym lifts: Sq 375, Bench 280 (pause), DL 385 @205 or less
Goals beyond my wildest dreams, 600 Kg raw total, 200/160/240
Hack away at anything which isn't essential. Do what you love, and do it often. Fazc.
Everything competes for recovery so more assistance is not always the best idea. miked96