Personally, on gut wounds, primary integumental closure is not my favorite thing due to the need for abdominal lavage in the majority of cases... in a field setting, all you are doing is trapping the dirt, fecal matter and undigested food in an area that is the perfect incubator for disease until you are sure you have internal structures closed, cleaned and free of any foreign matter. This closure system seems to require abdominal structures to be reinserted on the spot for it to work.... damp, clean bandages will keep the organs viable without introducing whatever is on the ground into the patient's gut, and creating an incubator inside his body.
If transport gets delayed for 3 hours, you have created a situation where the patient will be subjected to greater amounts of ABX and possibly a greater amount of tissue resected. If it's out of the gut (his pieces parts) leave it out until it's clean and repaired. Notice how nice and clean and pretty and shaved the patient is in the article? Not happening in a field setting.
Survey says.... it'll be fine at a hospital, it's not so good in the field.
MOO, YMMV
