Very happy with my duster, very very fast single track bike, out of my collection it is by far the quickest bike A to B. Once you get used to it it's okay in the air too. (I don't do anything massive all sub 4-5 foot).
There really isn't that much difference between a gensis io and a duster imo. I have a 17.5 io with a 100mm stem and a med duster with a 90mm stem both ride pretty similar.
It's quite amusing as my riding buddies ask which bike I'm coming on and try to actively discourage use of the duster 🙂
One downside I do suffer from chainsuck more on it than on other frames and my emails to charge on the matter have been ignored, I have tried 3 drivetrains which were okay on other frames