I used to have to cover my ears with something to cut down the wind noise, and I didn't wear them if I expected to perspire a lot, or get rained on.
I have been riding with Siemens Aquaris behind the ear aids for about a year. These are digital aids. Also water proof, dust proof and shockproof. Wind noise has been no problem. I only occasionally notice it if the wind is just right (or wrong) but this is unusual. I don't worry about perspiration or getting caught in the rain. And they are much better and a little cheaper than the first pair, which had none of these features.
I can highly recommend them.