I've actually never grown any Pterostylis species at all. At first I was intrigued by Pterostylis, then I lost interest because of how hard they were to come across. Then when I saw Pterostylis curta, yeah, it was like you said, they're not very showy...
I may consider getting one later, just because I know a source for one here in the US, and it doesn't hurt to add an easy to grow orchid every-now-and-then.