Now, I am convinced that this will be a great reaction.
I found in a good organic textbook (Carey: Advanced organic chemistry) a nice example of an similar reaction.
Piperidine reacts with 1,1-dimethyl-2-ethyloxirane with a 100 % yield (whow !). As expected in a base catalized ring opening reaction, the nucleophile adds to the less substituted carbon. So, our secondary amine will react nicely with phenyloxirane