I returned my set of Vibe Duos because of the lack of a clicker to pause, skip, answer calls, etc.
If I have my headphones in, I'm probably doing something where I can't or don't want to pull out the phone to answer a call. The offering from Vibe didn't offer the flexibility that the iPhone headphones did.
The product from Shure seems good, but my concern is that I'd end up with about 40 feet of cable because I believe that the "jack" for your headphones to plug into is on the mic unit itself, which is already up by my neck. Add the length of any headphone cable to that, and it seems a bit annoying.
I saw a new product from Monster, I believe, that basically solves that issue, but you end up with a separate string of wire. it plugs into your iPhone jack, and the bit you plug in there has a female headphone jack to plug your normal headphones into, so you end up plugging them in about an inch above your iphone. Wear headphones as normal. Then, off of the side of that plug, a separate wire that has a mic and the click button on it can be run up and clipped to your shirt or whatever. This also seems like it would give you the option to run your normal headphones behind your head and down your back, while keeping the mic up front. Just a thought!