I don't have any personal experience with the molded plugs or the game ear. I just use my Peltor 6S muffs while hunting. These get hung on the carry handle of my pack so they are easily accessible. IF I have the time to put them on I will. If not, well I guess my ears take another hit. Quite honestly, I'd strongly consider the advice given above. It'd be better to have the plugs in all the time and save your hearing, which never grows back by the way, than continue to damage your hearing. The Peltors get turned on very easily accidentally and I've gone through two sets of batteries in a season because of this. I've been looking pretty strongly at the game ear recently and is the way I would suggest somebody go for hunting hearing protection. At the range is a bit different.
Geb