said by xenophon: Yea the only thing Sprint doesnt do is make their (Sprint/Nextel) employees get along!
Keep in mind that the industry's largest EV-DO operator and new spokesman for open networks (Verizon) has traditionally disliked such devices, and considers them a violation of your terms of service.
First of all, Verizon does not have the largest EVDO network in terms of population coverage. Sprint covers about 215-220m pops with plans to hit 230m this month. Verizon last reported 210m. Sprint's is even larger when you include Alltel roaming, which Verizon doesn't do.
And Sprint not only allows such devices, they sell them.