PS3 FAT/Slim question - game saves/PSN

[garlad]

For those who have a PS3 and are planning on getting a new PS3 Slim, I would like to ask the following;

Wouldn’t it be a good idea for game saves to be stored on a server? (Optional, of course, as not everyone is connected to the internet)

The reason I ask is if I decide to get a Slim, I wouldn’t want to be restricted to playing games on the one machine. My PS3 FAT is in my living room where I watch my Blu-rays and play my games. Should the Slim go in to my bedroom, and I wanted to say play some Uncharted 2 but had started playing it on my FAT, wouldn’t it be handy to have the game save online so that I could just pop in U2 and continue the game when I log in to the Playstation Network, even though I started playing it on a different machine? Sure, I can use a USB key and copy the game save across, but I wouldn’t want to be doing that every time.

If this even possible?! (Is this sounding a bit like OnLive?!)

Also, if I am logged on to the PSN through my FAT and I then go in to my bedroom and want to check something in the store on my Slim, can I log in even though I am logged in downstairs? Will the FAT automatically log off? Or will I be able to log in to the PSN on both at the same time?!

Thanks!