Rated 5 out of 5 stars
I had previously rated this as 4 stars and listed a few problems I had encountered with clear not working for dials, etc.
After contacting the developer, at his invitation in a reply to my review, he asked a few questions and made some suggestions of things to try.
Over the course of a day of back-and-forth he narrowed to a probable conflict with a few other extensions I was running.
He hit it bang-on. It was not interacting correctly if I had the hyperwords addon set to anything but default behavior for its popup.
With that changed, this speed dial extension began working perfectly.
So five stars for dedication for a really, really great addon.