When I had it on my previous muni, I tried about every possible configurations including flipping the T part.
I have different cylinders to fit it on the seatpost (it came with the handlebar).
I agree, an adjustable stem would have been great.
At least a longer one would be great, maybe I would manage to find some bike parts that fits.
this whole thing adds some weight to the muni, that’s a pity, but since I got used to the handlebars, I find it difficult to step back, not only it ads control , but without it I just don’t know where to put my hands anymore, and I don’t like holding the seat handle for a long time.
When I see unicyclists holding the seat handle with one hand, ore even worst with both I feel like they need to pee 
This evening I found a way to mount the brake lever in the loop of the handle.
the extremity of the lever is close to the front end of the loop and I can pull the lever by my right fingers.
the lever is still protected by the loop when UPD.
Have to test it when I’ll mount the HS33.
Or I’ll go the classical way: under the saddle, with the kh spooner (and people will think I need to pee )