The only point of having a wireless speedlight studio is having wireless triggers built in, and ETTL. + it runs on battries which is both good and bad.
Good because its super portable, bad because the dont recycle fast, the die quick, and becomes kinda a pain after a while.
If you take that away, its just a VERY overpriced, underpowered studio lighting with very limmited # of light modifiers. Which is the reason I went to Alien Bees. OR which you can do with cheaper flash units like Vivitar + skyport.
ETTL can be a total blessing, but it can also be a total nuisance at times. I found myself spending as much time trying to get my exposure right using ETTL be using FEL and flash exposure compensation than using everything in manual mode and metering with a light meter.
One thing I do like about ETTL, is when you are really moving around, dont have time and space for big lights, dont have time for metering, ETTL will get you close enought, and sometimes even hits exposure right on. I guess what im trying to say is that its hit or miss. But thats just the nature of the technology. For example, shooting cars and shiny reflective objects, makes the ETTL system freak out, and underexposure like crazy. This happened a lot for me when shooting product photography. But when shooting product, you have plent of time to get exposure correct using normal strobes. + the needed power to shoot at like f/16 f/22.....
All I can say, is if you really want a speedlights system, just got to try it for youself. I had 4 speedlights, it was a blast to use while I had them. But moved on to bigger things.
If you are going speedlight, I would say go with a 580ex as your master. It also allows you to shoot 580ex as your main, and ur 430ex as a hair, or background light on channel C.
IMO I think you would be better off with one AB800 and a ebay slave if you only plan on having one light. Another point of ETTL is the ratios beteween lights. A, B, and C. You set all your ratios from the master, and FEC for channel C from the master and shoot. If you only have one light, cant really take advantage of those features, and you paid for them.