if you need it so much why don't you try it? But if not why bothering with Vista? I tried Vista on my father's PC. It's a piece of......! Way worsee than XP. If you need windows apps try XP. Don't even bother with Vista.
I've ran Windows Vista x64 via Boot Camp, it's not really a problem except the Eject Key, Bluetooth, iSight and WiFi are unsupported but apart from that it's as smooth as a whistle.
I've returned to 32-bit, I think it's good personally, it's just a shame it's such a Hog on the Resources, 14 Gig Hard Drive and 1 Gb of RAM is a bit too much for an OS in my view and I suppose alot of others aswell.
For work I needed one laptop that I could use for Windows and Mac development... I got the latest MacBook Pro and am now running Vista x64 on it with few problems. Bluetooth and wireless both work -- in fact the only things that don't work are iSight and any of the Fn keys. I remapped the right-Apple key to "Delete" so I can log in (via a registry key).
I'm pleasantly surprised that it works as well as it does...