Actually, with some decent varnish, you get the same effect with real wood!! Seen her do that in a friends house with real wood. Well funny! (Only a small dog too, so she gets up lots of speed in a short distance!)
Thanks for all the advice people - it's been a big help.
You'd be amazed at how INexpensive real wood is - and reasonably good stuff too. On the other hand, it's not waterproof without varnish and a decent sealant for between the boards.