Actually, I was still thinking about situation you’ve described, and I think it is still better to…
George Chkhvirkia

I have been delegating both object properties and :build and :create ActiveRecord sugar methods like this for a while now with good results.

I would also add that all this delegation makes unit testing your code much easier. It is way simpler to stub out the responses to your delegated methods, than to associate mock objects or even real objects with your models.