In reply to galpinos:
That was indeed the joke. However I've used them, as well as raft of other approach shoes, and actually found them very nice to use. No more slippery than any others, and climb very well for what is essentially a pair of trainers.
If you want something that doesn't slide about on wet grass, I'd suggest looking at some fell running shoes - they don't climb as nicely, but thats the trade off with the big chunky tread required.