Great!!! I finally bite the bullet and get 18" rims and Coops and NOW they offer these puppies in the U.S.
I think that long term I'd want to find an 18" size that fits the LR3 and do the same bolt-on/bolt-off system that I use now, rather than running these on the highway. So, I'd keep running the Synchrones on the 19" rims and swap out the wheels/tires when I want to go wheelin.
No matter what people say about on-road performance of these MT/Rs, they won't be as good as the Synchrones. I do wish I had LR rims in the 18" size instead of the aftermarket ones I have, mainly for the built-in beadlock...but that's okay. When I air down it's not really necessary to go below 25 psi or so.