Yes, the MVP Tokens will entitle holders to dividends from MVPLINEUP profit, and the tokens issued represent 20%. Additionally, MVP TOKENS will be tradeable on MVPLINEUP and on the WAVES platform when it is ready.
will they be tradable on other exchanges like poloniex?
Good question. This is something I can't guarantee as it would depend on the MVP Waves asset being listed on Poloniex. That being said, NXT assets are on Polo (MMNXT and UNITY) and my understanding as that the Waves asset exchange will be similar.
So in short, I don't know for certain, but it is likely a possibility.