As a developer, I liked the feature that you can lift it to the top while still wearing it. However, it changes the focus as well when you put it down. Every time you want to lift it, you need to adjust the distance with the side nobs to push it further. So, when you put it back to the eyes, you'll have to do it again reversedly. It loses the intention of bringing convince. If I need to use two hands to readjust it every time, I'd rather remove the whole thing out of my head.
The second thing I don't like is the head resting on the back. It's not comfortable and the strap doesn't fit my head. I need to tighten it up so I won't feel it’s sliding down. But then it hurts my head.
Honestly, the price is pretty good. For a PCVR user, it might be a good choice. If you don't need to put it on and off so frequently. I think I'll return mine though.