The Ambi-Safety on my older .45 Witness took me a whole 5 minutes to install, and I've NEVER heard of, or seen, an Ambi-Safety on a Tanfoglio or Tanfoglio based Pistol break.
You've probably heard of plenty of 1911 Ambi-Safeties breaking, but the Witness design is quite a bit different.
All that said, I rarely ever use a Safety. Some USPSA/IPSC weak hand drills have required it.
From Left to RightEAA Witness .45 (1992)
EAA Witness .45 (2004)
SAR K2-45 (2013)
Tanfoglio Series 88 TA90
Tanfoglio Armscore RIA MAP1
Both with 19 round Mec-Gar Cz75 Magazines and Hogue Grips