Have a question regarding masking device. Next week the swedish health care system will provide me with a Zen Widex in ear masker for free. The tricky part for me is wich ear to chose. I have T in booth of them and slight slight H in the left one (avoid using that ear while talking in the phone and so on). Shall i ask for a right ear masker or a left to retrain the bad ear? I guess that you can´t reverse them for use in booth ears