If your broker gave you the opportunity to buy Twitter at the IPO price, would you do it? Seems like they are doing everything they can to avoid another Facebook debacle, and there's a great chance it closes much higher on the first day of trading.
Sure, why not! It's a no-risk trade! Has there ever been an IPO that didn't at some point trade higher than their IPO price?
If you can get it at the IPO price, if the momentum continues re: IPO's it will open higher the day it becomes public.