...but then I'll see other offhand references to it still being unblockable if you're close, like this:
Rothasor wrote:
To defend against the first attack while being close, you must be in one of two positions before the startup animation occurs
-Crouching block
-In mid-air
After the animation, the game will always have you in a standing position, and it'll be too late to try to crouch block. If you were standing near during startup, it's too late to try to defend. Just prepare yourself for the full impact. If you were in midair during startup, you've escaped his ground slap during startup and is free from that attack. Do not attempt to block low at this point.
So basically, yes, it's unblockable if you're too close. Imagine having an ultra that is unblockable at close range! Imagine!!!