Heh, I liked the leave-taking from the Enterprise, that was most affecting yet straight forward. The gift of the Bat'le'th was rather interesting (I think Harry may have a larger effect on Federation-Klingon affairs than he ever expects - if it goes back with him, imagine how a Bat'le'th would disconcert Tommy-boy and the Deez). And lest anyone question whether a human can become proficient with one, I know a lady who is quite proficient with one and I'd not care to get on the bad side of her or her husband (both are quite capable fighters).
Author's response
Oh you have no idea of how that little gift will affect Federation-Klingon relations. Quoting my wife and her creative writing class "The gun is on the wall and it's loaded. Now I have to use it." and believe me, I'm gonna be using it in a big way much later on.