I've discovered, much to my great surprise, that Blogger works well with secure ftp, and actially can be install to directories like ours. I tested on my domain and then moved it to my ULM space. It still works!
I have no plans to actually use it.
If I can do so safely, I'll move this blog and the reference blog to ULM spaces so that it will then be on our domain.
I suppose I had never thought about it because it was working fine as it was, but not letting users navigate away from our site is much better.