Looks cool. One question, I'm not that well verse in manxian history but do they consider themselves related to scots and/or had a similar clan system or is their adoption of tartan just a modern "celtic revival" thing ?
Manx consider themselves to be Manx, one of the many Gaelic nations. The National Tartan was officially adopted in 1901. Tartan on the Island, as well as Kilts goes back a long way. However like most Gaelic nations, the kilt died with only Scotland really retaining them, thanks to Jacobite rising.
I have the original Manx Tartan (now called hunting tartan), I got married in it. The revival of Manx Kilts really took off in 1940.