Squeryl is really awesome as far as scala-orms go.
I've used it in a couple of hobby projects and currently am using it in a bigger, and hopefully revenue bringing, project (a mix consisting of scala, wicket, squeryl and mysql. So far so good!)
Maxime, the guy behind squeryl is also very very helpful. I've posted a few questions on squeryl's group and have never waited more than a day for a reply.
Perhaps it's because squeryl still is relatively unknown, but still, this goes to show that this project at least has a Human Interface which is always nice.
Lastly, hopefully squeryl will get some more attention now that Lift has given it some official attention.
Anyways, yeah. Squeryl. Cheers.