I told him I would give an honest review, and I will.
Received a sample article from DumDum as a review copy. In my opinion, as long as you clarify 100% what niche you're talking about, you should be alright. Good keyword density, other keywords are put into the writing very well and it doesn't look spammy at all. However, like I said, he did mine on the wrong niche. As long as clarification is there regarding the niche, you should be alright.
I will not post the niche or how he differed in it (DumDum I ask you to do the same please), but lets say it was an acronym and he shifted half of it (2 letter) to a completely different meaning. As long as clarification on the niche is established and verified, you should be happy with the work.
End of review.