It is very important that we provide a special coloring of the hand-history tag.
Furthermore, I think it's very important that we guide visitors to add the hand-history tag to their ignore list if they are rather turned off by such posts. Is just including instructions in the FAQ enough? I don't know.
This site will quickly be overwhelmed with hand-histories.
For me, I think this is great. Each hand-history is a catalyst for all kinds of theory discussion. However, I think we need to serve the other, more abstract, participants.
There will be a good class of visitors who want to participate that are turned off by all the hand histories that will be posted.
I do believe a good percentage of high-quality participants will want to see the site in a cleaner fashion.
Since so many of the visitors to the site will be new to the stack-exchange model, I do not think a very large percentage of them will realize they can just ignore that tag.
This may even justify an announcement for first-time users (logged in). "Don't want to see hand histories? Add the tag to your ignored tags list"