I thought that was the main difference between a subtropical and tropical system - the fact that in a subtropical storm the convection is largely separated and out from the LLC - that plus the cold core in a subtropical system.

Regarding my earlier comments - things are changing with time with this system. Earlier this morning it looked less impressive to me, but now it's back to getting its act together - VERY rapidly. In fact, it looks more impressive now than ever, particularly in the 1115z image, which is the latest I'm seeing.

Edit: Just pulled up the Jacksonville radar. The center of circulation is clearly visible as a very large eye-like feature on the long range radar. Maybe it's just that the radar loop is not very long - but I also notice this on the AVN loop now that I look at it closer - but I don't think "Unnamed/Andrea" is moving very fast, if at all. Given that the LLC is sitting over or very close to the Gulf stream waters... not good.