I created this post from my web-based SSG app called Wren that's running at sawv.org.
For sawv.org, I'm using only one rel="me", which is twitter.com/jr_sawv.
I registered that Twitter account at brid.gy. sawv.org points to twitter.com/jr_sawv, and that twitter account points to sawv.org.
Wren at sawv.org posted a Webmention to brid.gy, which syndicated to the jr_sawv Twitter account. Here's the tweet:
And if for some reason anyone on Twitter replied to that tweet, brid.gy would send the info as to sawv.org as a Webmention, which my Wren app would store at http://sawv.org/webmentions.
Obviously, I manage Webmentions on my site differently. The "normal" way would be to show the Twitter reply as a comment at the bottom of the page, like a normal web post or blog site.