Sorry, still working on the glitch with search but here is a recent post that might be helpful.
http://www.trifuel.com/forum/11107/newton-running-shoes

I have been running with newtons for about 5 months. I use them for 1-2 of my runs per week and only short (less than 10 mi) distances. From the get go I was disappointed in the quality of the product. The shoes are flimsy and both the soles and uppers have essentially dissolved after less than 200 miles. I already emphasize fore and mid front foot strike and probably did not need these to remind me. I did get more calf soreness in the first month but I cannot tell that this has translated into any new skill or ability. Being a typical anal triathlete I perseverated in hopes of some breakthrough which never materialized. In light of all of the excellent shoes available at a lower cost I have no intention of getting another pair. Sorry to sound so negative, but I do think the money would be better spent on a personal coach or more carbon fiber.

To summarize from the other thread Tribro linked, I got them as a gift and love them. I haven't seen any of the flimsiness or shoddy construction mentioned above. I broke them in over a 2-3 week period and then ran 100% in them, runs up to about 15-16 miles with no problems/soreness at all.

The only drawbacks I see so far are:
1. The bottom does show signs of wear on the lugs, my guess is 300 miles will be pushing it for them. So if you are doing 40 mile weeks 3x a month and one recovery week you are looking at new shoes every couple of moths. I may try to rotate between regular shoes and Newtons, and use the Newtons for racing. I just don't know how the legs will react.

2. They are not made for 'all season' runners, so us here in the North will struggle to use them outdoors when it's cold/snowing. Also, they are not recommended for treadmills so you are back to your regular shoes. I know come spring I will have to break into them again.

It seems people either really like them or are not impressed with them at all. They seem to be a pretty decent company to deal with, and I personally really like the shoe and will probably get another pair when mine wear out.

Really? I just followed their directions/reasoning for not running with them on the treadmill and must admit that I have never tried them out on a treadmill. I will have to give it a shot I guess as crappy/rainy weather and time have really limited me to a lot of treadmill miles lately. 46 to be exact last week, including 19 on sunday.

I would never be able to run 19 on a treadmill either, i would go nuts. Id rather run in the freezing rain!

It's really not that bad (or at least I keep telling myself that).
I get on and set treadmill to 8 minute miles. Run 30 minutes and take a 15-20 second break for drinks/gatorade then run another 30 minutes.

Treadmills where I run don't let you go past 1 hr, so as soon as it shuts off I refill my water bottle and maybe take a quick bathroom break and try to get back on the treadmill and restart it for the second hour.

Second hour is same as the first. After second hour and 15 miles I stay on treadmill and re-set it as quick as I can. Finish remaining miles and you're done! If I'm feeling good I sometimes run the last 3-4 miles at an increasing speed.

I do it at a local YMCA so I can people watch. You see all kind of interesting things in 2 and 1/2 hours in the cardio room. Plus the treadmills have build in TV's so you can watch whatever you want.

Due to really crappy weather (I don't mind snow but it's been freezing rain or slush the last 3-4 weekends) my last 4 Sunday's have been 15.5, 17, 18.5 and 19 miles, all on a treadmill. This Sunday is a 20 miler, and I'm hoping I can finally get back outside!

Tried them on and ran a short distance, couldn't wait to take them off. Not for me. I am sure it requires some time to get used to it.