Check this out. It appears that ENO is coming out with it's own version of the SPE 2x2 and a double layer hammock. The article states that the Hot Spot will be available in Oct 2011 and the double layer hammock in November. The wings are prefilled with a 6mm CCF and at 9oz I suppose that it is pretty close to comparing to the JRB SPE once you add in some CCF for the wings.
Here's the link
It is said that copying is a form of flattery and ENO seems to be pretty good at flattery. Example: Pea Pod versus ENO Ember and the SPE versus the Hot Spot.