Yes PoS is _part_ of the consensus algo for this coin (Decred) - only 30% of the block reward goes to PoS while PoW miners (60%) and the the treasury (10%) rece

Yes PoS is _part_ of the consensus algo for this coin (Decred) - only 30% of the block reward goes to PoS while PoW miners (60%) and the the treasury (10%) receive the rest of the reward