Ok, well I'm certainly not going to start a debate with you two, I might be new around here but I'm a pretty quick study.
I just always learned it is Tau as is "paw". And my Dad was most certainly an Alpha Tau (paw) Omega. My friends were in Sigma Delta Tau (paw). I dated a Delta Tau (paw) Delta. The chapter across the way was Zeta Tau (paw) Alpha. Tau Tau Tau. Paw paw paw. 'sall I'm sayin'.