Ask SAMA / PG: Will YC be dogfooding SAFE's for its own investments?

In the past YC invested with Series AA ( <a href="http://ycombinator.com/seriesaa/" rel="nofollow">http:&#x2F;&#x2F;ycombinator.com&#x2F;seriesaa&#x2F;</a> ). Will it now use SAFEs ( <a href="http://ycombinator.com/safe/" rel="nofollow">http:&#x2F;&#x2F;ycombinator.com&#x2F;safe&#x2F;</a> )? If not, would you mind elaborating why?<p>Thanks!