I will second what
@mderrick said about the benefits. I've only got about 500 miles post conversion, all in town/short freeway driving. The difference in the way the truck drives, to me, is stunning. It's so smooth and light. Plus the bonus piece of mind of being able to get home on a broken front dif or broken CV joint. I started seriously considering this kit after watching a friend break a CV axle on a really steep, really long climb (not in a Land Cruiser.) It was sketchy getting him out of there and I was imagining having to somehow get the wheel off and get the flanges off... it would have been a mess. So, I'm happy to have that piece of mind.
About the AWD in the wet, slush, icy road conditions... I'm an avid skier and have been driving in those conditions every winter since I was 16. When the roads are like that, I don't intend to be going fast enough to where my AWD/traction control system is going to be the difference between staying on or off the road. I also take our AWD Audi to track days once in a while and have done a few days at Laguna Seca in the pouring rain. In those cases, at the limit, the AWD will cause the car to push if I come into the turn too hot or if I start to hydroplane and drift. I can't break it free and spin, even if I try (and I've tried.) Which is great. It's very predictable when I lose control. BUT, that is pushing as hard as I can in a controlled track environment. I would never intentionally be driving at that limit on the street! Especially in a snow storm in Land Cruiser. And if chains/4 wheel drive are required, it's not too much sweat off my back to lock the hubs and push a button. So, for me personally, the benefits for 99% of my driving far out weigh the loss of AWD. As a disclaimer, I don't LIVE in the snow. If I did, I might think otherwise.
My point is, it's by far the best mod I've done to my rig. Aaaaaand, Kurt can take your money.