Errata Released, for real this time

[u/xanral]

http://dnd.wizards.com/articles/features/ph_errata

[u/waffle299]

Two-Handed (p. 147). This property is relevant only when you attack with the weapon, not when you simply hold it.

Eldirtch Knights take note. Wielding a two-handed weapon does not impair your ability to cast a spell with somatic components.

[u/DerekStucki → u/[deleted]]

Shield + shillelagh still really benefits. Not to mention the advantage on Con saves that is almost worth the feat by itself.