Gosh pinegrow is a cool project, but the massive deal breaker for me is a lack of a Linux client :( any chance of that at all? For distribution (cause packaging is a bitch, to be honest) you can use something like Ermine to compile twice (i386 and x64) and then convert to a single static binary.
For now, I'll continue playing with it on my Mac, but Linux support would be the best.