MidgardSerpent's page

[Snip!]

The only real problem comes in if they repeat this with a size Large or larger creature, they may try to argue against even the 50% miss, since they know the monster must fill up the whole space.

My counter to this is usually that the 50% miss chance by concealment (specifically because of invisibility) isn't just missing the person entirely; it's also not being able to anticipate / react to their specific position / parries / dodges / etc. Some of that would apply to large or larger creatures, and some wouldn't. Even not being able to see the best angle to swing to land a solid rather than glancing blow on thick skin plays into this. Sight is a large component of successfully landing a hit, even if you know exactly where someone / something is.

The other thing to consider is that there doesn't appear to be any way to combine iterative attacks with natural attacks except for the section under natural attacks that mentions weapon attacks as normal + any relevant natural attacks, treating them as secondary natural attacks (-5).

If, as I think Scott is trying to claim, a Monk's unarmed strikes aren't weapons in this circumstance, I don't think you can combine non-weapon iteratives with the remaining natural attacks. This is, of course, rules as written, as Scott clearly favors.