Not really. I pointed DRK's dev to the fact that ring sigs create scaling and vast bloat issues that might make DRK a coin that can't be used for mainstream adoption / a DOA product.
He said he came up with an idea to get a comparable level of anonymity without the ring sig bloat that he'll implement in RC3.
Lets assume he can't get the same level of anonymity without ring signatures.
In that case, isn't the bloat worth being the only way to get decentralised anonymity?
Decentralised anonymity has been the topic of discussion since day one of Bitcoin.
Almost all the Bitcoin developers have tried to come up with a solution, the Zerocoin team came up with their idea using cutting edge mathematics and CryptoNote was a genuine surprise, it was a very well developed idea (see their whitepaper)
But the XC developer claims to have achieved the same in mere weeks what many very smart people have been trying for years. CryptoNote took two years to develop, Zerocoin has been under construction for over a year.
But XC does it in a weekend.
That is why I am skeptical, and what the developer says does not sound convincing.