Been using fibre for a few months now and I must say that latency is not the greatest...
I visited some family in Aus last year, they happened to have fibre and I was blown away at how instant everything felt, this was using my cell phone (Nexus 5). Websites loaded almost instantly, the Play Store kept up with my finger tapping etc etc.... It felt like I had upgraded my phone.
Latency here, seems pretty slow, even on LTE. Go into the Play Store, wait 2/3 seconds for thumbnails to load. Go to saved websites, wait 2/3 seconds for the page to start loading after tapping...
Don't get me wrong, my mind is blown when it comes to throughput! But latency seems to be so so...