Had a small issue with a J3.2 implementation, and their forum support team got on top of it very quickly with a fix.
If you want to give your responsive sites a "native app-like" off canvas navigation experience, then Menu2Panel is the extension to use.
This is about as bare bones as a component and plugin can get. While it worked once installed (unzip download, install component and plugin as usual), I went to the plugin to enable it and found not a single configuration option.
I then went to the component, and again, not a single configuration option. I've tried a few commenting systems before, and I assumed at least the basic options could be set, like which categories to include or exclude, set email notifications of new comments waiting for approval, or what types of input (html, links, images, none, etc.) should be available in the comment field.
Nope, nothing to set.
So, every article on your site can be commented on (and apparently, forever), and you'll have to keep checking in to the component to see if a new comment has been posted.
The only real pluses are, it has a built in captcha (extremely readable, so not sure of it's effectiveness), and the css appears to be very well structured, so adjusting the design should be a snap for css tinkerers. The out of the box design was pleasing to by itself.
This may eventually be a good component, but right now it just lacks too many basic features to make it useable on anything other than a test site.