I wanted to post a reply to a comment on the Talk page for Black Ice, and decided to click on the Reply link instead of edit. I found it very easy to use, and simpler than having to preview my post one or more times.
Topic on Talk:Talk pages project/Replying/Flow
We (the Editing Team), are glad to hear you're finding the tool useful ^ _ ^
If you are curious, there are a collection of other new tools we're developing for talk pages which you can review here. You can also turn on all of these features by enabling the "Discussion tools" setting in Beta Features.