Hello this is from the ethos WP :  When you build your personalized coin basket, you will be given an estimated cost and amount of underlying assets securing your investment. All investments are secured 1:1 by underlying assets.

Does this mean you cant really own your 'real' coins in your wallet and you will get a representative of that asset like with bitshares? And how will currencies be tradable against each other? Will this be done on the ethos blockchain ?