Does that setup work ok outside in windy environments? A lot of the 'active' audio systems I've found really focus on the wind noise while hearing aids will try to filter that out
As a workaround, some artists performing outside wear a thin, acoustically transparent beanie or headband over the ears effectively acting as a pop-filter/windscreen. This breaks the wind before it hits the mic while still letting mid-to-high frequency sound (speech/music) pass through. Not exactly a hearing aid alternative.