Well sensation, I don't think you will get back regardless of the surgeon.They are pretty much takign the nipples, resizing them and putting them somewhere else (in a more normal male position). You may or may not get feeling back in them (I mean to say skin to skin feeling). There are people who claim to get sensual/sexual feeling again. Basically I think it is a mental thing where you are telling yourself the experience is a good one and you have the feelings you used to have. You know your brain is the most important sex organ there is. I don't mean to say people are imagining it, but their brains are pretty smart.
Don't know about him. If he is close by you can go for a consult and ask to see pix. If he won't show you, then it is a really really bad red flag. You also need to chests like yours. Another huge red flag is an astronomical (say $300) consult fee. It's really advertising and should be free but I think something like $150 is not terrible.
--Jay