I would be wary of anyone wanting me to send something to them for review. Not that they wouldn't do a review (and a good one at that) but it seems to me like they would just be looking for free stuff, since I'm guessing they aren't going to send it back to you. If you were to do a giveaway where you send a free item to a winner, then that's a different story.
I have had people featured on my blog and have been featured on some others, some with giveaways, some not, but it's always been a mutual kind of thing. I wouldn't say it brought in any remarkable kind of traffic, but it got me some views, I'm sure. I guess you just have to decide if sending a free product to this person is worth it to you, and can you absorb that cost if it goes south.
Good luck!