Actually, it works well enough. There appears to have been some delay from the test community on lemmy.ml that didn’t occur with my rss app (feedly), so probably a hiccup.
Posts come through with kinda ok formatting (which is a challenge given mastodon’s constraints).
Compared to mastodon, links to external sources are actually provided (mastodon only renders a link to the original lemmy post).
But, it seems that when a link is provided in a lemmy post, a link to the original lemmy post is not, which is annoying.
Still … It works … kinda nice once you combine it with lists and making the lists exclusive (ie posts in the list don’t appear in the home timeline).