Josh McAlisterwrote a review of Ibis Hakka MX Disc Frameset on April 22, 2020
Familiarity: I've put it through the wringer
Ibis may have been early to the game with their dropped chainstays and internal 31.6 dropper routing, but by no means does that make the Hakka obsolete now. The current frameset has gone through a few tweaks, but it remains one of the fastest and most capable gravel bikes on the market.
Set up with 700c rims, you can expect to smash all of your local segments while swapping out for a wide 650b wheelset will offer plush confidence over chunky terrain. The frame is stiff, sure, but that is what you would expect for a performance gravel frame. If you wish to smooth out the ride, I'd suggest starting with a 650b setup and grabbing a carbon seatpost.
I haven't had a chance to try out the Hakka's bike-packing capabilities, but I am minorly annoyed with the lack of mounts. Aside from that, I have no complaints with an otherwise excellent gravel bike offering from Ibis.
Contact me if you'd like help setting up your own custom Hakka build!