I just received my pair yesterday and put a few miles on them right away. The fit and feel is really nice. I wear a size 11 wide in a running shoe.  Had to change from Nike to NB because the Nike's were too narrow. I was concerned about ordering a size 11D(med width) in these boots. They fit like they were made for me.  Perfect sizing. The width is comfortable in the toes and just the right amount of snug in the heel.  For me the fit and feel were perfect right out of the box. I assume that they will become more comfortable with time. Living in the south I was willing to give up some absolute waterproofness for light weight and cooler. I have a great pair of goretex lined and insulated boots and they are too hot and heavy for most of my hikes. These feel almost tennis shoe light and comfortable. I don't think this will be my last Zamberlan product.

Update:  I have about 400 miles on these boots now and like them more and more.  I have also bought a pair of Zamberlan Tofanes which are totally waterproof and very high quality.  The trekkers are still my favorite boot for the relative light weight and oerformance for the price.  After six months of muddy trails and stream crossings I have yet to experience wet feet. The Zamberlan cream that they suggest you use goes a long way. I treat my boots often and have used very little of the tube of hydra bloc that I bought for $9. I crossed a creek last week that required about 6 or 8 steps in laces deep water and still did not leak. It has given me the confidence to wear these boots on wet days and not have to resort to hot heavy gore tex boots.  Don't get me wrong when it is really cold and really wet the Tofanes are a wonderful choice.  My wife wears women's Zamberlans. Can't go wrong with any of their products if they fit the shape of your feet.