Okay I know I said I'd comment when I got the adapter for my current phone all wired up, but for some reason I'm having some incompatibility in software I guess. The reason I say its software is because I can use the microphone and everything sounds absolutely clear in voice memos and voice dialing and everything like that is recognized perfectly.
When I make phone calls though, for some reason there's a really bad echo of my voice in the speaker. I thought maybe that it was only on my end, maybe the phone was playing my voice over the speaker so I know how loud I'm talking, but I was told on the other end it sounded like I was talking in a cave.
I really don't think this has anything to do with the Etymotics, probably just either an issue with the adapter I made or just that they're not as compatible with my current phone as I hoped, because like I said, voice memos recorded over them sound very clear.
Unfortunately, until I upgrade my phone (which will probably be the Pre when that's released), I won't really be able to comment on the mic quality more than that apparently.