Well, I will give the Grell a fair chance, as I will do with the FiiO UTWS5
Besides that, I do not understand what you mean... Married? No. They just happen to be the best IEMs I've ever heard! And, I consider myself lucky that they were the first pair I ever got! With the Qudelix 5K it was different. I had to purchase, use and try, various FiiO players, like the M9, the M7, the M3K which I still own, until I reached to my Qudelix.
And, I do not drive to work. I walk to work. And, it is not convenient to walk around with the cable, at least for me.