iPhone users still Gripe over Skype

With a four-way price war going on between AT&T, Verizon, Sprint and T-Mobile, we have seemed to lost track of VoIP over 3G. Software from companies such as Fring or Truphone allow you to make VoIP calls on your iPhone, but only over WiFi. There are hacks (crash-x) that allow you to trick the iPhone into thinking you're connected to WiFi and make VoIP calls over 3G (or downspeed to EDGE/GPRS). I'm still wondering ... why bother? If the idea was to save minutes or money, the carriers have already responded by driving cheap voice with price reductions. Besides, VoIP over 3G needs massive data compression and low latency to battle quality of service issues that make the user experience poor.  Skype claims they only need a small amount of bandwidth - between 6 kbps and 40 kbps, but I don't think they can overcome latency issues. Many users were disappointed Skype 1.3 did not include push notifications or support VoIP over 3G. They still have usability issues using Skype when "real" phone calls come in (it logs you off). Eventually data plans will race for the bottom too so Skype could become irrelevant on 3G/4G handsets.