Well I REALLY like my ARB air lockers, I have them front D30 & rear D44. Not sure what your issue is "seems silly to lug around the added infrastructure involved with air lockers" not really any issues. I also have a York OBA system so no big deal to send air to the lockers. If you don't have an OBA you can always get the larger ARB compressor, it is great being able to air up tires and the end of the trail w/o having CO2 tanks.
I was wondering about electrical connections to my diff's.
How do they handle water, and not just rain water but crossing streams, along with dust etc. and you still need a power supply and switches. The OX locker you need to find a place for there big levers and I have heard the cables get out of adjustment.
So for me the ARB's made sense.