"I am always amazed by the huge effort that some people will put into justifying laziness.
Ha Ha Ha. You talkin about me Matt?
I've always used Latex glue. Heck, I'm so cheap and lazy that I don't even buy elmers. I buy the off brands at the dollar store. I never use it on conifers. I've never seen that they need it. I do use it on maples and elms and other fast growing trees. If you don't use anything many times the bark will seperate, split and peel back. Leaving and ugly scar and deadwood exactly where you don't want it. That's especially true if the weather is hot and/or dry at the time. You don't need much though. Just spread a thin film of it over the wound. You're just looking for something to keep the wound from drying out until the new growth of scar tissue can roll onto the wound. It probably doesn't matter what you use for this as long as it keeps it from drying out and doesn't outright harm the tree. Many things will work. Latex glue just happened to be the first thing I tried so I've always stuck with it. Err...no pun intended.
Tony