[SydneyK]

The Tri Sigmas on my campus were usually just called Sigmas. While I understand that there is no Greek letter called Sig, there's no Greek letter called Ep, either, and most of the guys in Sigma Phi Epsilon called themselves SigEps. The letter Omega is more of a W than an O, yet Chi Omega's are ok with being called ChiO's (at least they used to be -- I assume they still are!).

If you want to be called by something (like Sigma or Tri Sigma), that's fine. But to say you don't want to be called something b/c there isn't a Greek letter with that name, well, that's kinda strange if you ask me.

I've always been fond of Sigmas, so I'd never call them something they didn't want to be called. But, it's always bothered me when this excuse is used to explain why they shouldn't be called Sigs.