Well, a lot of people say that. But after three sets of well broken in runners (a good 6 months to a year) I still could not make them work without all sorts of blisters. Usually the little toe, and all around the base of the ankle. I used to run every day about 5-7mi in the SAME runners with no problems.
I also tried some high sneakers, but the soles weren't stiff enough for good sole protection. Soo, I pretty much gave up and went back to boots.
Almost all of the lower cut runners have the same problem. When I step on an odd surface, they twist into my foot just below the ankles. On fairly flat trails, the few with no rocks, gullys or other obstuctions, the work fine. I believe I have very thin heels. I kknow they are about two thirds the size of my wife's. My wrists are the same way. Often, a mens watch band will be in the last hole. At the podiatrist he says I have a wide toe placement though. Soo, I cut a liner to fit my heel on my boots and let it go. This doesn't work with runners, though. I can easily fit three fingers along the sides. My partner doesn't have that problem, but still wears boots. Off-trail hiking can be a bear without good boots.
Anyway, my boots weigh about 1#3. My Solomons weigh about 14oz for a 5oz difference. I'll take the boots for 5oz simply for the fact that for 90% of their life time (about 8 years now) they are good enough for most any conditions.