When he and Tom started talking, it wasn't a very rude dialogue, it just seemed like two friends were having a regular conversation. Obviously the conversation was not about a "normal" subject because they were talking about weird ways to get rid of warts using natural things and incantations, but that type of conversation was probably pretty common back then. I actually like Huckleberry Finn, he added a type of character the story was missing and kind of switched up the plot of the story a little bit. Before all we had seen was Tom pranking or using people for his own good or being in some place he hated like church or school. This time Tom wants to see Huck Finn try some new way to make warts go away. It is interesting to see some one who is so self-absorbed have an idol other than themselves. He previously show little sense of caring before Huckleberry Finn was introduced, but now, he genuinely seems interested in Huck Finn. He even seems like he would follow Huck Finn almost anywhere.
Huckleberry Finn was an awesome character to throw in and he adds a much needed aspect of the character that was hated by almost all of the parents in the town. Huckleberry Finn is too great of a character to just disappear from the story. I really like Huck Finn as a character and I really hope he turns in to a key character in this book.