It records every session that it runs so it should be easy to find demos (replays) of different trading days. Yes the es is a good question. I would like to see a replay of one of last weeks heaver days (NY session) or this week in order to see the visual as the volatility grows and the order book becomes very unbalanced. It would also be interesting to see if it collects and keeps a running tab of the market orders at close as you get closer to the end of the trading session. The only demos I have seen were of average volume, low volatility sideways trading days.
Bookmap works excellent on ES....as you move to thinner markets like crude or gold it became more difficult to read