We are using colored coins to create an IPO of our e-commerce business, since it gives a lot of control to us and no fees as oppose to using mastercoin or havelockinvestments.com and cryptostocks.com. Look here:
https://bitcointalk.org/index.php?topic=609682.0I don't think people would make the switch to from bitcoins to ethereum, nxt, mastercoin and other crypto 2.0 protocols just because although they may be innovative, there is not much incentive to make the switch. I could be wrong, only time will tell.