My first two tanks I cycled with damsels borrowed from a friend's 170 gallon. I keep a very close eye on all my fish and know when something is wrong or they are severely stressed. Frankly, I had no problems. A few weeks later, got out the nets, 5 mins later, have damsels, back to my friend's tank. Happily they are all still alive and kicking and ruling the 170.
Damsel catching 101 - get a few glass pickle jars (please take label off) and leave in water for a few days, trust me, they will start using these for hiding places, just scoop them up first thing in the morning before they get their fins going.