It is clear that ranged attacks cannot be performed while engaged.

"A unit cannot perform a ranged attack if it is engaged"

But what about ranged skills?

The deathcaller and the daqan character habe a lot in play depending on the answer.

This game is very cool but desperately needs a FAQ

Kari's ability is a melee ability. It's only useable with surges. Deathcaller wouldn't work while engaged because he needs line of sight, so he'd only use it with who he's engaged with (if he was engaged himself)

The rules are fairly tight and concise. There is very little so far that really needs FAQ'd