I detailed a bit of the handling characteristics in the Today I… thread, though now that I’ve had some saddle time on it I can further elaborate 
I was worried at first that it would handle funny due to its non-standard design, but for me at least I find it rides pretty normally (Apart from being much closer to the ground than a 36er). Tight turns are still possible despite the lower pedal clearance, maybe just don’t try to make fast tight turns to keep the lean in check 
No pedal strikes so far!
In the other thread I also speculated that UPDs might be more risky being that it’s lower. After a few at-speed UPDs, I’m leaning towards it being not as much of an issue as I thought 
I was still able to land on my feet and outrun them thankfully. I still expect the chances of having a UPD to be higher than riding my 36er, however, being it’s a smaller wheel size and thus more prone to road irregularities.
More generally, I’m really enjoying the Huni Rex so far despite it not quite being at it’s full potential yet 
Biggest thing I still need is a longer seat post; I’ve strained my legs a bit riding it with the saddle a little too low. But once I get the longer post, a brake, and a bar on it, I think I’ll feel pretty comfortable doing some proper long rides on it.