That does sound like a nicely balanced piece of business.
Right now they are front heavy with the 28" .... which I like, but if the bar will knock around a pound off, it would be worth it in the hilly stuff for sure. Right now we're on flat bottom ground and it doesn't really make much difference what you carry around, 441 or 660 with 28" bar isn't so bad on flat ground, but hilly stuff sure makes a difference.
The main thing is, will they handle the abuse. I have handled a saw with the Oregon RW 28" bar and it was nice and lighter, but they sure seem like they could/would bend easy. So I never bought into them, that and I'm quite racist against Oregon anything at this point, LOL.
If some loggers have tried these and they are still using them, surely they can stand up to some abuse.
Later,
Sam