I had a pair of the things some years back. I'm fairly certain they have been improved since then, but when they broke, I didn't replace them.
To answer your question: I doubt you would find them satisfactory in improving conversations with the wife while watching TV. They don't really do all that much to amplify ambient sounds. What they do well is cut off sudden, sharp noises (like gun fire) before those sounds reach your ear while allowing ambient sounds to be heard relatively normally. And, they do that in a fairly satisfactory manner.
If you are expecting to hear things crisply while you sit back in your La-Z-Boy with the TV playing at a normal level, I think you're going to be disappointed.
You may be able to determine this for yourself by ordering a set from Amazon and trying them at home. When/if they don't work, send 'em back for a full refund. If you have Amazon Prime, you won't even pay postage.
I'm a little hard of hearing and I have a set of wireless headphones connected to the TV. If Bunny says something I think may be of importance, she will say it more than once and at an increased volume. I take off the headphones and properly respond, "What was that, honey?" Most of the time when she sees me wearing the headphones, she doesn't bother trying to talk to me. It took some time to instill this behavior, but it was worth the effort.
Good luck.
Crusader Rabbit