People should stop panicking about price unless they're a day trader.
All that's happening is a diversification in the "anon" market across algos. DRK and CLK are moving towards each other and may end up at parity, thereby serving the POW and POS sectors independently. Remember, DRK doesn't offer a POS product so that market is wide open for anyone that wants it. (And don't give me any POW vs POS b.s. - POS is here to stay as 'market distribution is a genuine alternative to mining).
Although, right now, they may be competing with each other, ultimately - if CLK turns out to be any good - it will serve to consolidate the 'privacy offering' right across the market.
I know this because I live in a "trendy" street with a lot of coffee shops. There used to be only 2 coffee shops. But when more started arriving, the price of a cup of coffee - instead of going down - went UP ! That's because the consolidation of the street's identity as a trendy place to visit generated demand at a faster rate than supply and drew in people from afar.
Similarly, the consolidation of the privacy sector in the cryptoeconomyand the establishment of a leading POW and leading POS coin could mean that everyone decides they have to have a holding in both and ultimately make the presence of the two coins permanent.
b.t.w. Here is my street for those who want a bit of entertainment in the form of geographical puzzles. Where is this ? (Hereafter known as "The Street that serves as a market template for the future of privacy coins"

)

And the ansver is: 309 Byres Rd, Glasgow G12 8UQ, UK