Conversion into tokens is one-way. HSBI Tokens will not be convertible back into Hive SBI voting units. Right now their only function is to sell into the buy-wall so members can manage their own refund if desired.
Later there will be curation dividends paid in kind (HSBI token holders will earn more HSBI tokens over time). We do not recommend buying HSBI tokens at any price greater than 0.50 HIVE each.