I should point out that the stereo earphones that come with the phone are also quite decent. Certainly not high-end like your Shures, but most people wouldn't notice the difference. And of course they can switch between music and phone use, without having to bother with an adapter. (To use them for the phone though, one has to turn off bt, at least if a bt headset is within range. Same with any wired headset.)
Being the normal earbud type, they (if used as they are) don't fit well in my ears, easily fall out, etc. I found a good soution for that--Griffin Ear Jams. You put these on normal type earbuds, and it transforms them to the in-the-ear earbuds (like the Shures and others), which stay in better, and sound better.