How will this work with SE's infamous hatred of discussion threads? I'd imagine posts about code style would generate multiple "right" answers with lots of discussion to be had?
I've not participated much in the new SE sites, but I feel they do not hate discussion threads as much as the original SE sites.
Generally speaking when it comes to SE, I've noticed the smaller the site the bigger the tolerance towards discussions, and codereview it's not quite a big community yet.
That's mostly Stack Overflow, not Exchange. If a Stack Exchange is appropriate for discussion, they're fine with it.
Noo.. the Stack* sites in general. Overflow is just one, I've seen the same deletionist bias on Superuser and Programming as well.