If he nabs the Libertarian Party line, he could hit 2-3% of the vote. As an Indie, he won't hit 1%.
His performance would largely depend on whether Cruz is cancer among moderate conservatives or not. If Cruz isn't, he's fine, but if he is, a showing of 15-30% of the vote is possible.
I want this scenario to happen both because it would make a Dem pickup possible and because I have not seen the live results of a genuine three way race (I was hoping with McMullin, but that fell through) anywhere and think it would be really cool.
Nah, most nevertrumpers like him because he refused to endorse Trump for a long time and most farther right people like him despite that.