I bought it from Microsoft Store, so can forget to check the card size.
The replacement of SIM card is very fast. Last time it takes me half day to change from normal SIM to micro-SIM, and this time it takes 10 minute to make the new SIM works.
Since I'd need to go shopping for screen protector and a second battery anyway today, so it caused only a little bit of inconvenience.
The setup / restore process is fast. I started it when goes on the bus, and it finished before I go home. The process take less than 15 minutes, but all the Apps appears dimmed and need to go through actual installation when I connect it to a Wi-Fi network.
For some unknown reason, my corporate email account information cannot be received successfully, will spend some time to check later.