LBS=linked braking system.
I would agree with Dave on this one, as long as the system is done correctly, and often, it should fine. A lot of it is just normal care and feeding. Wash the bike or ride in the rain...make sure you dry the SMC area before parking her for the night etc.
Make sure the pivot bearings are always greased with good quality waterproof grease so the unit can pivot freely and smoothly.
The service manual indicates to place grease in boot area, however, this may mean to assist pushing the rim into place, not packing it with grease to collect dirt and trap moisture etc. I also wonder if packing grease behind boot will heat up and melt and cause more issues than not?
I ride my bike 365 days a year, rain or shine, but I also use my motorcycle hair dryer to make sure the important areas are dry every night.
Your results may differ.