My new position has me traveling between the UK and US very frequently, and I have been researching getting a UK SIM card to use in my phone, instead of using a crappy work-assigned phone, or spending a ridiculous amount of money by roaming with Verizon. It looks like a SIM from Three will work mostly fine in my A1533 iPhone 5S (as the only unsupported LTE band is band 7, 2.6 GHz).

Does anyone have more specific experience with this? Is this something that other people would find useful if not?