I haven't actually, but I just looked at it and while it seems very well thought of, the first thing I miss from stash is the fact that It doesn't show me the whole file by default, just the diffs. And I can comment on lines outside the diffs, which is often needed. I could't find a way in reviewable to comment on a line. Stash shows the comments near the lines which makes it easy to follow.

In stash, I see the list of files on the left, and clicking on each file shows me the diffs. I also have the option to see the diff only (without the whole file).

Where I work we cannot use outside review tools, it has to be hosted internally. But I don't think we are your target audience in this case.

Cool, thanks! You need to sign in to leave comments, and they are indeed attached to specific lines (either in or outside the diff). They even move across revisions of a file as you iterate on the review... And yeah, you can easily expand to see a whole file if you want.

I figured that Reviewable wasn't the right tool for you / your company -- I was just looking for your opinion. Cheers!