Somehow I missed this thread when it was originally posted. Actually, just the other day I asked a similar question about low energy MLC'ers.
My h is definitely a low energy MLC'er, even though he has always been a very high energy person in all other stages of his life. He used to do everything with zest and perfectionism. Now, he is a shell of that person. His "replay" was only about a year (secret drinking, constantly watching cage fighting matches, crude teen humor movies, music blasting from his youth, going out, golfing several times a week, buying new clothes, fixated on improving his body through diet/exercise, changing looks, concerts constantly, looking/test driving sports cars, hanging with a younger crowd, no OW [but expressed a desire to having other relationships]).
He is now completely different than he was during that time period. He is almost lethargic. He does very little to maintain our home....things have gone unrepaired for months/years. These are things that never would have happened. He was a constant fixer on our home. We have rental property that has gone empty for about 10 months because he doesn't have the energy to get some things fixed (though he is off all summer). He plays computer games and soduko by the hours. Doesn't always shave. Never picks up anything around the house. I could see some aspects of his previous self during replay, but now there is very little of what he was.