LindbergB767 - Apologies for quoting 767 incorrectly, I have yet to fly it...
Back to the thread:
My company's issued LOW VIS OPS CHECKLIST does not mention wipers, nor the AUTOBRAKE sys, also required by MEL for CAT3. This item, may make an operational difference for safety, however, for the wipers, I really don't see a good reason not to land.
The LOW VIS OPS CHECKLIST assumes you have dispatched with a CAT3 aircraft and prior to making a CAT3 approach requires you to check your minimum equipment is still there. Dispatch requirements for CAT3 are more strict, hence items appear in the MEL to downgrade the aircraft which do not appear in the LOW VIS OPS CHECKLIST.
Think about it, would you test IF the L WIPER is working prior to commencing an approach? Nor can you test the AUTOBRAKE if warning comes no selecting it inflight for landing preparation. But if before dispatch you have such items inoperative, they WILL affect you. Certain inflight failures do not have such implication, others do...