I prefer to use Silo !
And it's not real public version :
You must create an account !
Like any companie, it's a way for them to make advertissements on your mails, to survey how many people are interested and for them to prepare their marketing side( price increase or drop down , new version etc ...) !
Well ... I pass on the subject caus i use Blender or Silo for tarditionnal modeling !
But good new for Hexagon users indeed