I've got quite a bit of time on islanders flying in Africa. The bn2 flies very well on one engine when compared with other light twins. With only 3 paxthe islander can comfortably climb at 1000 fpm at about 90 kts cruise climb. From the ground after takeoff the islander looks extremely slow in flight although it is probably safely above blue line 65 kts. Rotate speed is between 51 and 58 kts depending on weight. With 41 kts red line it's pretty easy to recover even shortly after takeoff.
I've failed engines in flight and at MAUW even unfeathered I could maintain 7000 feet. Once feathered I could even climb a bit. Maintaining 80 kts on one engine.
Probably one of the safest light aircraft you can fly in.