In fact, Theymos himself, has stated that this is the only alt-coin that he is actually interested in.
You got my interest on this coin but could you provide a link or proof that "Theymos" make a statement or review about GRIN? I would really appreciate if you can give some link about this although I'm currently reading the details about this GRIN coin. Thanks in advance!
here's the link to their ANN https://bitcointalk.org/index.php?topic=5090427.0 Theymos's comments are in there, read the lot only 11 pages. However, in it's current state the coin is shit, the infinite supply and extremely high inflation rate will kill it. Hence why I think someone should clone it and turn it into a limited supply coin in the same fashion as Bitcoin.
Theymos does not recommend buying in early on this one. With rate of inflation the coin value will probably be down 90% in a few months.
Another thread to read https://bitcointalk.org/index.php?topic=5098450.0 created by theymos