Android :: Pattern Lock Be Bypassed On CDMA Phone?

If someone finds or steals the phone, can the pattern lock be bypassed on a CDMA phone (not sure if GSM phones are vulnerable to SIM replacement as a bypass)? If not, perhaps that's pretty good security, so long as you're careful not to let others see your unlock pattern and you wipe the screen to remove your finger trail. Of course that still leaves the sd card unprotected, but if keep everything important in your dropbox, you can delete it from there, and probably do so before the person decides to pull the card out.