Lord Spandex Masher,
Sounds like you're getting your spandex in a twist for no reason.
WiFi sync and iCloud are two separate things. It sounds like you're getting them confused.
My understanding (from reading stuff, have not yet had a chance to experiment) is that WiFi Sync is there simply to give you the possibility to replace the need for a USB cable. Hence it's obvious that you need iTunes on a PC to use it !
iCloud is the whole backup/download thing based in the Apple cloud, and that, by the sound of things, is what you should be looking at.
My understanding is that it is Apple's goal is to move away from the PC/Mac iTunes requirement towards a cloud model, where everything is pushed to/from a cloud. So even if what you want in terms of functionality is not available right now (considering they've only just publicly launched the cloud), it will be available reasonably soon.