A bit late to the game, but for what it’s worth, my experience with the Shockz. I run about 6-7 hours per week, and listen exclusively to audiobooks. As a result, I can’t comment on the sound quality, but I do have some other observations.

Pros:

• Waterproof. I’ve been running for more than a decade before I got the Shockz, and no earphones lasted more than 6 months in the local rain. No such issue with these headphones.
• Not falling off. By their design, they would not fall off, unlike any and all earbuds I ever tried. I may have weird ears in this regard, but I had to learn to run with a hat or headband to keep earbuds in place.
• Spatial awareness. Excellent at keeping me aware of my surroundings.
• Good battery life. A single charge lasts me through the week, and a quick partial emergency charge can carry me over the next 2-hour run. In addition, the “battery low” status actually works well. With any other brand of earbuds, from Mpow to Anker, once I got the “battery low” warning, I had about 20 minutes of charge left. So, going for a long run at “battery medium” was always a gamble. With the Shockz, I never ran out of charge when I started at “battery medium”, even on my long runs.

Cons:

• Not too comfortable. I have a big head, and even so the band behind my head is standing off enough that I can’t wear my hat over it. So, in winter it’s earbuds, held in place and waterproofed by my hat.
• A bit too quiet. Everything, including the persistent wind here, is interfering with the sound. So, for audiobooks, I have to process them in mp3gain to around 95 dB, and then play them at max. This, however, may be more related to my mp3 player; I didn’t do an analysis of it yet.
• The controls are weird. My sense of touch is not too good, so pressing the controls while the Shockz are on my head is a futile exercise. I just can’t feel the buttons properly, so I have to take off the headphones and see which button I’m pushing.

I didn’t test them with music or calls yet (for the latter, I’d have to pair them to my phone), so can’t comment on those features.