So can go power build gear for deadeye?
Deadeye has like zero condis (or very few, anyway) in its kit, so power is the way to go with it. Rifle skills hit stupidly hard.
Condition Deadeye will be very strong but so will power Deadeye.
Plenty of people will use their rifles for power though. As mentioned the riflecan hit very hard with the right traits.
You can definitely go conditions with rifle. Kneel2 with quickness piles on poison really fast.