In the past when we've brought in unknown (at least to me) Aussies, I've always been a little worried. With memories of Tame Tupou, Matt Orford and Glenn Hall ocershadowing the good ones like L'Estrange, Henderson etc. Since Rohan's only track record with unknown (again, to me) Aussies is Kieren Moss, I'm happy to give him the benefit of the doubt. As Duckman righly said, we clearly needed some more back row options, so if he turns out half as good in his position as Moss is at fullback, I'll be happy.
I won't be getting carried away until I've seen him play, but it sounds like the right kind of signing for what we need.