If you think the flippening will happen, and ethereum will overtake BTC as the primary currency, then vSlice is a no brainer investment since gambling will naturally migrate to ether based platforms.
What do you mean? Vslice is a platform based on the ethereum nor ethereum smart contract. I may think if your opinion goes wrong because that can be an opportunity for the vslice to grab more users if ethereum overtake bitcoin.
That said, the current price is over valued. vDice has no where near enough revenue to justify this price for vSlice (yet). I'd wait until a market correction before investing.
As per his monthly dividend still run smoothly, And it can't be determined as overvalued coin.