The idea of a transmitter that has to be programmed through a computer kinda makes me nervous. What happens when your XP machine dies and you replace it with a Vista machine, or Vista machine dies and you have to go to Windows 7 because you can't purchase Vista/XP anymore....
Or, even just a service pack comes out that breaks the driver?
Similarly, the Castle Creations programmer for BL ESCs is neat and I trust them quite a bit to keep it up to date, but I really like the little programming cards that are now available...no worries about computer compatibility.
I suppose it's a throw-away TX in the first place...but I'm sure it would stop working at the worst possible time, and then you'd have to transfer everything to a new system, but you might not be able to get the old setup out of the old TX as it has no screen...ugh.