[sthulbourn]

The only clear win I can see from this is the REPL.

Everything else is down to preference... I'd rather write native Obj-C code, but the guy next to me would rather write in ruby.

It's very subjective and down to coder preference, I can only hope that the ruby world has a great work around for the very verbose selector names in the iOS SDK; I was expecting some sort of wrapping for the iOS SDK to make it simpler.

[poutine]

REPL seems to be a crutch for not having a visual interface builder. His example in the video wouldn't have been an issue in Xcode as you'd have positioned and named the label correctly to begin with, and would have seen it in context too.