Comment 1 for bug 609289

There isn't a correct style in this regard. The designs were reviewed by an expert native speaking Greek typographer with about 20 years of experience.

We don't think there is any ambiguity between the 'γ' (gamma) and 'ν' (nu), most notable the γ has a leg.

You might be interested in a recent blog post on the development of the Greek, entitled 'It’s all about Greek', http://design.canonical.com/2010/09/it%E2%80%99s-all-about-greek/