Loop Earplugs

I've seen a lot of adverts for these.

What are anyones experiences?  Do they help when listening to something or someone specific, or cutting out unwanted sound or noise or background?

Although I was told a few years ago that the  hearingvtest suggested I would benefit from hearing aids which I've had 4 years now, I think apart from the high pitches and maybe quietness, its possible that some issues related to auditory processing disorder.