Smallfurry: You can get, apparently, 48, 36, 26 SLX chainset. But I cannot find it anywhere, so I have 44, 32, 22. Which might all be a bit low, but I think if I shift the front up to 48T and run an 11-28 on the back I'm going to be good to go on road or off road, as I'll have a huge range.
Did a quick search of the places I'd seen it when getting mine. Only found it in Germany ;(
http://www.bike24.com/1.php?content=8;navigation=1;product=8809;group=60;page=3;pid=88;menuid1=2;menuid2=0;mid=0;pgc=0