Vista is already engineered to run with ful Aero effects on some integrated chipsets (like GMA950). Others need a hack.
Will it be better with a deciated GPU? Obviously, but then that is the case pretty much all the time anyway.
As to the FUD that "Mobile Vista" needs a hybrid HDD, one again not so.
First, there is no such thing as "Mobile Vista". Second, what was said was that, starting in June 2007, laptops would need a hybrid drive to have the Vista Premium Logo. Here is a neowin thread on the topic:http://www.neowin.net/index.php?act=view&id=33611
Also the same information is right at Microsoft.com under the Windows Logo Certification program.
A lot of this stuff seems to be coming from the same place, namely The Inquirer. Experience has shown that this source is, shall we say, less than reliable.