Thanks, but in that case I think it's cheaper to just buy it here in Norway and return or re-sell it if I don't like it.
But maybe it's better not to even try a Zeiss. I have seen what happened to other people who did - they ended up replacing all their Canons with Zeiss and I can't afford to do that... Besides, I'm really happy with what I have now and don't want to awaken that lens lust again.
It's an amazing lens no doubt, but I want to see what that different rendering is about. The 35L is already as sharp as I would want (even too sharp, sometimes). I have looked at samples of course, but it's hard to judge differences in rendering looking at other people's shots. I believe them when they say it's there, that's why I'm curious. We'll see. Maybe I'll take the risk and try one after the summer. 
Anyone else following the Soccer world cup btw.? Too bad Sweden didn't make it this year. They did participate in 2006.