Personally, I use LTE on iPad for 6-8 hours a day so the additional ~$5/week it costs for the device upgrade and accompanying Mobile Share line add-on is well worth the convenience for me.Ummm, save both $130 for the LTE iPad model and the cost of a second data plan and tether from my iPhone for $0 when wifi is not available?
The better question is who can justify paying for the LTE model and a separate data plan when you can turn on personal hotspot from your iPad without even taking out your iPhone?