I'm glad that it's out, and it's good to see a familiar face, but it's a carbon app so like most carbon apps (including Transmit, the other ftp client), it's freaky - the other day i was uplaoding something to my server via ethernet and fetch just disappeared on me! no error messages, no crash, just poof it quit. Then i tried the same transfer with Transmit, and the same thing happened. I've had other carbon apps do the same thing too.
I'm mostly using the command line for ftp for now.