I think the whole reliability debate is kinda overdone. Elockers and arb's are well proven. Yes, they can fail, nothing is perfect. Be prepaired to fix them in a jam. One thing the elocker has going for it in the reliability department is that it can be engaged/disengaged manually if need be. The only elocker I have had hands on experience with is in a stock truck. It hasnt been under two feet of water but I think elockers do ok with water. I dont think you want to engage / disengage them while under water though.
I agree. And even if the locker fails you still have 4WD, so with clever driving and braking a similar result can be achieved. I have run the entire rubicon trail in reverse in my 4runner with 31 inch tires and open differentials front and rear.
