Clicks Power-Keys

I just stumbled accross a Youtube video talking about Clicks Power-keys.
https://www.youtube.com/watch?v=u7Uz1YZ5hQA
Overall, it seems to be a marked improvement over the original clicks keyboard. No longer a phone case, this new version appears to be a mag-safe power-pack, from which, you can slide out a bluetooth keyboard. This frees up your phone's original USB port for charging and what not, and also probably deals with the issue of your phone becoming taller with the original phone-case form factor. Although, your phone may be a bit thicker now, but thankfully it's mag-safe, so you can just snap it out when you want to slide it in and out of a tight genes pocket.
Also, Since it relyes on bluetooth, it can not only pare with your iPhone, but also with your any other bluetooth enabled device.
It's sounding a very promising device for us double-tappers. And no, I am not talking about the podcast. Sometimes, I just don't want to swipe through screen or deal with touch-keyboard. Are there any existing clicks keyboard users, do you see any downside to this newly announced product?
If anyone here is planning to consider this, would apreciate a detailed review.