not my idea of hot swappable.
You need to turn on ahci mode in the bios. Be prepared for windows to bluescreen on boot if you don't warn it that you're going to do this.
eSATA appears to be electrically identical to sata. I think this is a shame, as I'd like e-sata to carry power. Making them more robust sounds sensible, I think the cables are shielded too. I don't really see the point, normal sata cables seem to work just fine outside the case for me.