To be honest I never tried to make an internet call on VoIP before the MR, so I'm not sure if the FCs were there already or not.
Also, not sure if this was just a fluke or what, but after a phone call this morning, I noticed my battery dying very quickly (almost 1% every 2-3 minutes). Sure enough, once I checked battery usage, "voice call" was at the very top, like I had never hanged up or something. It indicated over 2 hours of calling when my call might have been 5 minutes top...
A reboot seemed to fix the issue, but the only calls I've made since then were via BT, so I'll have to monitor the battery usage after a call on speaker/handset.