position update, 3G/2G data traffic AND roaming

I am actually testing Avast Anti-theft on my Nexus4
I realized I can uninstall Avast Antivirus Mobile, thus mantaining the Anti-Theft (and this is good, so far as even a mildly skilled theft will have no hint of being tracked)
I actually have my device setted NOT to use 3G/gsm data connection IF in roaming
Will this setting prevent Anti-theft to update my device position to the Avast sever? (In the most likely scenario of having no open wifi connection in the nearby)
Or Anti-Theft can force the use of the 3G connection even if the mobile is setted not to use it in roaming?
regards