It's been interesting commuting to work on the motorway these last two weeks, in damp to fully wet and cold conditions. Dropping to 5th to overtake, I've several times heard it over-rev as traction breaks, just backing off the pedal a little to regain grip. It's actually done it in 6th a couple of times, too. The BRZ is incredibly stable and hasn't wagged its tail at all. The 235/40 PS4s are very predictable, too.
Got to be careful with the supercharger sometimes!