I've had both my shelter specials Embarked. The results were somewhat unexpected, but understandable.
Ida's results matched pretty closely with Darwin's Ark, so I'm pretty confident that they're relatively accurate. (Also, they make a lot of sense both phenotypically and behaviourally) https://my.embarkvet.com/dog/ida
Snowball's results were a bit of a surprise, and have left me with more questions than answers, but what are you gonna do! (I can't compare to his Darwin's Ark results either; they came back as 80% "unknown" because they don't have Eskie in their reference panel yet). https://my.embarkvet.com/dog/snowball3