Run an Aussie in my D30 and am not locked in the rear, currently. My front Aussie is invisible in 2wd, as far as I can tell. Whether my front axle is powered or not, my locker's differential action appears to work the same - outside wheel is allowed to rotate faster than the inside wheel when turning. Only difference between 2wd and 4wd when driving with an autolocked front end (when turning) is that the front, "inside" wheel will be powered when in 4wd, but not when in 2wd.
Also, it sounds like you are not going to hit a bunch of ice and snow any time soon. But, be careful driving if you use a front autolocked Jeep on slick road surfaces at higher speeds while in 4wd.