I am off on an international trip where I mostly plan on buying foreign SIM cards to use in my Verizon iPhone 6. However, in situations where I will only be in a country for a day or on a layover, I would like to take advantage of Verizon's $10/day TravelPass. Will I be able to switch back and forth between the foreign SIMs I purchase and my Verizon SIM card? Does anyone have experience with that? Or, will the Verizon SIM not reactivate until I return to the US? Thanks!