I just tried this and it works. SWEET. 4g works too without installing any additional radios or whatever. Steps I did was Unrevoked3.1 -> Titanium Backup -> Backup up all my apps and data -> Downloaded latest Baked Snack Rom zip and placed on SD card in the main directory -> Installed ROM Manager and chose to "Flash ROM from SD Card," chose the bakedsnack.zip file and it took it from there. Then after flashing I had to go through the account setup to put in my gmail account so I could have access to the Android Market. I downloaded Titanium Backup again and restored apps and data. It was far less painless than I had anticipated.
I could have downloaded and installed a ROM from within the ROM Manager app, without needing a pc, but it was taking too long to download the Fresh 1.0.1 ROM so I just went to my desktop and downloaded Baked Snack.