Hi
Just want to share my positive experience with you…
Ordered my Sterzo Smart friday morning ( CET ) at the Zwift Store, it arrived here in Denmark Tuesday 
And I got it set up Wednesday.
Installing it under my frontwheel, replacing the Neo riser block, was a 5 minute job, and the geometry fits my flatbar/fittness Trek FX perfectly.
Pairing on Windows 10 was instant and it just works.
The first test rides shows a very realistic experience. I don’t really see any great improvement in the Zwift experience on the normal routes, it’s fun to be able to place your avatar on the road, but since I’m zwifting for the workout I don’t really care.
But on the Repack Ridge MTB course it´s so fun. No doubt that I will visit the dirt from time to time until Zwift implements more features that makes use of the Sterzo 
And I guess the Alp and Ven-Top will be just as tough with steering as without 
BooX