Yes, however I would never recommend to anyone to run the front locker on it's own in a 100 series.
Having the rear locked when airing up is no issue since you would be stationary in any case.
Is that because you'd want the rear to be doing the heavy lifting so to speak? In most cases the rear will be the end that all weight has been transferred to. (Climbing)
I run front locker only though. CDL engaged and ATRAC in the rear...... 3x4ing.