I purchased one of the lights from JBHI fi just as a test and found it really useful in terms of keeping my body in sync with the normal circadian rhythms. It also meant that I could adjust my circadian rhythms to be in sync with the time-zones I am working in without feeling tired. This is my third bulb and I plan to buy a few more each time I get paid. They don't come in E14 at the moment so I had to purchase an adapter as most of my lamps are E14 sockets. I Purchased the DiCUNO E14 to E27 adapter.
If you set it up correctly it works really well with Google Home, although it is mostly in terms of turning on and off. The functionality does not seem to be there yet to use Google Home to adjust the lights colour temperature.
My setup is that I have an Apple ecosystem with Google home. Using the Lifx app and Apple Home I can control the lights with ease on my Apple watch, iPhone and iPad.