Missed this. I've been running a set of the SKF seals on some Revs since, erm, November last year. They've been ridden a far bit, Morocco and the Peak mostly, and they seem to work just fine. Stay in place, don't leak oil that I can see, and they're nice and plush, though as above, it's a subtle difference from stock RS seals. I ought to change the lubricating oil in the lowers some time soon, so will let you know if a mix of grit and slime comes out.
I'm not saying LoCo's wrong mind, just that for me they've worked, but the improvement over the stock seals isn't massive.