I got my report yesterday, but just got around to being able to look it over and provide a review.
First of all, the PR of the blogs that he commented on were up to par and were as he said that they would be.
The only things that I see is that he is using the same account to post comments on these blogs, so that may or may not make it quicker for these links to fall off.
Also, the comments are just variations of one comment which is used to drop other links.
No telling how long they will stick, but they were delivered just like he said they would be.