Fox News showed a French cop with a helmet that was badly shot up. I don't know if the officer wearing it was killed. The cop said the terrs were trying for head shots, as probably so were the police.
I have not seen any GIGN police. Either they're holding these elite anti-terrorist cops in reserve or the media hasn't shown any when I was watching.
I looked at the linked article above in ,The Daily Mail, and one cop had a Glock 19 in a vest holster. I suspect that these special cops have a selection of sidearms. A French member of another board said that Paris police who shoot well enough can ask to be supplied the pistol of choice within reason. He knows one carries a Colt .45 auto.
If it interests anyone, I was browsing the Net for something else and found pics of Lithuanian troops with M-16 rifles and M-1911A-1 Colt .45's. That's presumably how they re-equipped after the Russians left and they joined NATO.