[zhenyakovalyov]

there is nothing scary in the concept of perpetuity when it comes to bonds. the experts may correct me, but I would think that a comparable instrument to this would be a preferred stock: you do not have voting rights, you agree to receive a fixed rate until the issuer buys back or goes bankrupt.

where they may differ - liquidation preferences (I would assume that bonds pay first) and taxation on proceeds (depends on your country of residence).