Personally I had very little trouble with My IFS with a locked front. The entire 6 years I owned my 86 Turbo 4Runner I broke only 1 axle, the shorty inside the housing. Never had any trouble with the CV's and I ran 33's and 5 inches of lift. Granted it was an auto trans which was very forgiving, but my brother ran a front locker in his 91 V-6 extra-cab with a 5-speed and never had any trouble. I am more afraid to put a locker in a unmodified solid axle, I will only run limiteds in my 80 pickup. Street manners are fine with it unlocked, but locked on lets say snow the auto soaked up a lot a kept it straight. Now my brothers got a little squirly in snow, but not to bad.
