As for XC in Sweden, it's 99% lycra crew, I know as I'm one of them!
Sweden hasn't really clocked onto all mountain type riding yet, of course there is the small numbers who ride it, but it's lightyears behind the UK.
I think mainly because the XC culture hasn't yet developed beyond lycra, and the same could be said for trail development.
But it's changing, I see more AM bikes being bought and sold, mainly around the big cities or the bike parks. It'll take longer down south in Skåne because it's almost completely flat, which kind of make 5-6" travel AM FS bikes pointless.
The bike club scene is all lycra; road, XC, and a little CX.
All that said, the cycling in Sweden is absoltely fantastic, I can ride singletrack for hours without seeing another person. Just no it's amazing as the ground is frozen solid so it's like riding on sandpaper, super fast and fun.