One place that it could succeed is as an embedded browser in native apps. There is already traction for building "native" applications using HTML/CSS/JS and ple

One place that it could succeed is as an embedded browser in native apps. There is already traction for building "native" applications using HTML/CSS/JS and plenty of frameworks that bundle your web app into a native app. There's no reason they couldn't use a Ruby-aware (or Python-, Lua-, whatever-aware) WebKit fork instead and give the app maker more choices. I'm not saying it's necessarily a good idea, but I'm also not convinced it is a terrible one. I need to think about it more before I decide where I personally land, but my point is that there is absolutely a place for a tool like this.