No its a CDMA/LTE handset, the SIM is not a GSM SIM. This phone is like any other VZW phone for now.
It depends what country you go to. Verizon offers CDMA roaming in a select number of countries (~40 or so) while the rest require GSM. Countries Where Any Verizon Wireless Phone Will Work
One of the world phones like the Droid 2 Global or Droid Pro. The Evo won't work there either. Aside from the 2 world phones I listed, you'd need to get something from AT&T or tmobile.
I was told by the Verizon rep, that once more carriers adopt LTE the phone will work in other countries, as LTE is a GSM based frequency.