I finally got round to mounting this. Comments: the sleepers are (as expected) narrow for UK outline, they are HO code 83 I think, this can be kludged of course. Joining was easy using standard fishplates, but I had to file out a short section in the middle so I could Z-bend it to get the rail tops level. It's the thickness of a piece of 300gsm card, not exactly a problem to make up, I think I will solder as well for stability. No centring springs so you're going to want Tortoise motors and remote mounts (available as a pair but you need two additional remote kits), these work fine and are reasonably tolerant of the inevitable small difference between the throws of the various blades. Ballasting is a bugger, though, you have to be more careful than you'd believe. I recommend cutting out the additional card under the thrownbars (code 100) or filing down the bed under the throwbars (code 75/whatever).
Is it easier than building a scissors crossing from stock components? Yes. Is it easier than scratch building? Also yes. But it's not exactly straightforward and not cheap either.
I will post some pictures when I get round to it.
Oh, also, from the "playing trains" department, I have to report that I absolutely love the Seuthe smoke generators. Watching an 8F steaming into a tunnel - well, I love it. Guy