I got my 2.3s and actually played on them today for an hour or so. WAY lighter feeling than the 1.3s, VERY comfortable, and VERY STABLE (especially in the heel and ankle)...
...and yes sizing was the same as the 1.3s so order them a 1/2 size smaller.
They felt like butter right out of the box. I was really impressed and don't care for my 3 week old vapor VIs at the moment (compared to the 2.3s). ....quickness of a Propulse 2/Vapor, Stability of a Propulse 2/CB1.3 and cushion of a 1.3.
The 2.3 will be a benchmark shoe IMO
PDRGTs w/ALU-R (M) / Bi-Phase (X)