no never silent electronic shooting for weddings awesome, long battery live (i get already +/-1500 mixed shots 50/50 liveview/OVF shots with the mkII), Ai-Servo in live for stills.
A guy here:is claming 4000 shots @50%battery live
I've posted pictures on here of my 1DX2 battery shutter count exceeding 10,000 frames on a single charge. That was me shooting almost constantly at high speed 14fps for 5-6 hours with fast action, servo AF in absolutely crazy AF difficultly from moving stage LEDs sweeping and changing color constantly all in front of a full motion LED wall that was 12 feet high and 40 feet wide, and my targets were dancers leaping and erratically moving in between all that plus a mild smoke effect on stage.
The 1000 shot count is more common when you are taking single shots or even short bursts more intermittently. If you are just going full tilt with very little downtime between shots, this battery is an absolute monster. Based on those same parameters, I bet I could crack 20k frames on a DX3 in a single charge.