The whole "you're moving the weak point" argument is total crap. You are making the vehicle stronger!! Chances are you won't be breaking the next thing in the chain, although it can happen, but guess what? Now you are getting further along the trail and having more fun! That's the whole point. If you subscribe to the move the weak point theory, then don't ever, ever modify your car.
I disagree. There is always a weak link in a system. If you make the weak link stronger, you have created a new weak link somewhere else. Pretty simple.
Personally, Id rather replace a $65 half shaft than a front diff. But that's me, I don't live to throw money at my rig in the name of "who said wheeling is cheap?"
That being said..... They look nice. Hopefully there is a market for them.