Oh, homesick! Hope you were thinking of me, so I was there in spirit!
Isn't the Hilton Stone magic? The sculptor, Barry Grove, did it with original lo-tech tools, really beautifully, and I've watched him at work over the couple of years it took to do it. (And he's a lovely lad - looks a bit like Colin Firth...)
The original stone in Museum of Scotland, showing intact side (the other side was lost, reused as gravestone for 'Alexander Duff and his 3 wives'):

And these are the two sides of the new stone (reverse, with cross, put together by Barry from Pictish models and research):
