I have only recently heard of "carrier aggregation", but when I got my Moto X Pure Edition 2015, I already had a smartphone using Verizon. All I had to do was pop in the old SIM and set it up. No issues.
I thought I knew the answer to your question, but went to verify before replying.
After going to the Google, I thought you were asking about the un-plus G5.
Phone Arena shows the G5 Plus to have all of the same, exact bands as the Moto X Pure Edition 2015, however Phone Arena also shows that the regular G5 is missing many bands, as compared to the Pure.