I have now totally switched to the CLIK system for all my bikes, its awesomely easy to use and a total game changer for me!
You can't beat a purpose built Clik gauge. Quicker and easier than clamping a pump to check pressure.
Love these things, one of the best simple upgrades you can do for your bike.
Small, good build quality.
I do not like that there is no air bleed button, you have to unscrew header a little to bleed. Button would be quicker, but probably will make construction bigger.
Power button is protruding and to easy to click accidently, for example if your tools are packed too tight.
Removable head is very similar to pump adapter, same Shrader thread but shorter, and because of that it may not seal with your pump if you decide to use it as pump adapter. It would be great improvement if head was the same part as pump adapter. It would mean that you always have it with you and don't need a separate one.
A very well made product. Very easy to use, makes setting the tier pressure accurate and a quick job.