I have been commuting on my Charge Grater 3 for just over a year (3000+ miles) so far so I thought that I would provide some feedback about my experiences in case anyone finds it useful.
In short, I'm really liking it! The combination of hub gears, full mudguards and a chain seems ideal in terms of low maintenance, yet repairability. I have replaced the chain once so far and had the hub serviced for the first time last week - I had the 20 tooth hub sprocket swapped for an 18 tooth (but the 20 tooth is still ok) and the worn gear cable was replaced, but otherwise it was fine. I would have usually replaced two chains and a rear cassette, and maybe even a chainset as well, on my old hybridised MTB during a comparable time frame...
The range of the 8 speed Alfine hub gear was a concern before I bought this, but it has proved to be good for commuting, although I did find myself speed-limted for the Pedal for Scotland Classic Challenge - the low end is lower than I expected, which is good for occasional hill climbs, but I thought that the high end was under geared until I learnt more about cadence - upping mine from around 60 to 80 allows me to maintain about 20mph now, although I rarely reach that speed on my commute. I pre-emptively bought a smaller sprocket for the hub so I am trying that out, as mentioned above - the low end has suffered a little but it opens up the top end.
There are a few irritants. Toe overlap with the front wheel/mudguard when cornering tightly is probably the most troubling, but I have pretty much got used to it now. The handlebars were too low for my comfort but I addressed that with a higher-angled stem and bar ends.
The main ongoing issue is maintaining the position of the rear mudguard to prevent it from rubbing the rear wheel which I find tricky and is susceptible to bumps. I am still a tad concerned about the ease of removing the rear wheel when out and about due to the hub, but I am yet to actually have to put that into practise...
I notice that the 2016 model is brown which may appeal to those who weren't keen on the pearlescent finish of the older models. I am quite glad I bought when I did!