Has anyone used NIKONE caliper seals?

[limax2]

What are the general feelings about replacing non leaking brake seals?
According to the service book, every 2 years fluid and seal replacement which seems slightly excessive to me.

Two years for the fluid is fair enough as it absorbs moisture, but I'm guessing a lot don't stick to that.
As for the seals at two years I don't know anybody who does that, but maybe somebody who likes spending money and dismantling brake callipers does it  .