I love this.

Has anyone tested to see if it works with Blogtrottr which will email you whenever there's a new item in an RSS feed?

Just since this doesn't seem like it even includes a date field in the RSS? And of course no guid. So I'm wondering how compatible it winds up being.

Dates shouldn't matter. The feed has ID elements which is what identify entries. Atom has no guid element. So I would expect this to work with any reader.