I actually prefer the two currency system. The other as a quick fund system and the major as an asset. It helps people make actual funds to solve current issues while also making a long term saving at the same time.
Pegging SBD will cause a disturbance in the force (although it will settle in the long run but it will make a complete turn around). It's gonna be helpful to the blockchain though as focus switches to just one currency.
Anyways, to get the sun one must prepare for rain