Ooh, ooh, ooh... pick me, pick me (what DVD was I watching last night!)
Max, how does the colour of the transfer compare with known Chance? If it's the exact same colour it's unlikely Sherdley would have duplicated it so closely – I'm also thinking it's unlikely they would have copied the pattern so closely either.
But because Swirl was so dramatic and successful, it might not have stopped an overseas company duplicating the design.
As for the logo, this might be an early piece of commercial adware, but it certainly is a very strange item and worth hanging onto.
EDIT: An update on Sherdley's version of Swirl: it was named 'Twist'