I added an 2015 AX2.0 to my stable 3 months back and am nearly up to 2500km now.
I very much preferred the 11-speed 105 shift to the old 10-sp SRAM on the 1.0 and rumour had it that the current TRP hydro-mechs were sorted. I'm very happy with the action and efficacy although not sure the rotor/pad match is optimal as they do shudder a bit at low speeds until well bedded in. Front pads lasted 2000km, rears half gone.
The standard wheels are boat anchors but stand up to abuse well. The Rocket Rons are brilliant in sand, mud, good on gravel but wear quickly on Tarmac - I swapped front/rear after 1000km of 85/15 road/trail as the back tyre had almost lost it knobs.
Meanwhile I bought a set of Stans Alpha 340s with Scwalbe Ones (and the through-axle converter kit from Stans USA) - wheels are around 1550g I think so now the bike can double as a speedy, durable all-weather commuter that is no hardship coming off my plastic roadie. RAT makes wheel swaps a bit easier too.
As for off-road stuff, it laps up gravel roads and smooth fire trail of course but is huge fun on flowing single track.
Just back from a trip to VIC - took it up Charlotte's Pass, then rode Yarra Trails ST and Hans Loop finishing with a 100km (mostly) gravel run in the country.
Very happy indeed with its versatility, quality and great value.