Well, if wetsuits are legal... and you don't mind fighting it in T1... then why not?

If you ask me, it's all about being WARM! At my tri back in April, I was the ONLY ONE who carred a towel to dry myself off inbetween the pool and T1... and I was the ONLY ONE who was COVERED from head to toe in pants, jacket, and full gloves. Compare that to the guy who raced in a Speedo the whole time.

I was warm, and that's all I cared about. If someone thought I was stupid looking... oh well... they were freezing.

Do what works for you.