I have the same problem with bucking or hesitating when I try FAS and reingage with the cvt in neutral. I thought my car was just weird.
I usually restart the ice at 25-30mpg and get a noticable hesitation. Since I don't like that pull on my tranny, I've pretty much resolved to just stick to neutral coasting- which I've been doing alot of lately. (colder and rainey here, ugh)

either way- I don't think it's really an option at highway speeds anyhow- you slow down too fast from wind resistance.

KLC
2005 HCH CVT 'Verdigeek'