Hello good folks. Can anyone tell me exactly how the BLOCK / NHZ asset exchange will work when Blocknet goes live?

Here's what I can discern: Currently, you can purchase NHZ coins, called HZ, on Poloniex for BTC. When you own HZ, you can purchase NHZ assets (via the in-wallet NHZ asset exchange), which represent shares in a company-like entity. In the future, Blocknet assets will be available as one of these NHZ assets.

So how will you be able to purchase the Blocknet NHZ assets with BLOCK? Is there actually a way to trade for NHZ assets using an altcoin on the NHZ asset exchange? Or will we get a set number of HZ for each BLOCK, which we can then use to buy the assets? Will people be able to buy these Blocknet shares if they don't own BLOCK, or will BLOCK tokens be the sole method for obtaining these shares?

I understand that this hasn't all been figured out, but I'm just trying to understand what approximately will be the buying power of a BLOCK.