I actually prefer the F/safety model. I use it when I'm holstering (then release it with the right-side lever when it's in place) or when I'm touching it for anything besides firing (like quickly installing a light on the rail). I also like putting it on safe when I set it down for any reason without unloading it, and also when unloading it for that matter. At this point my muscle memory activates the safety whenever I handle the Beretta outside active firing.
When I started carrying, the Beretta was the only pistol I owned and I would carry with the safety on and trained hard to make sure my muscle memory turned it off during the draw. It never slowed me down compared to the safety-less or frame-safety guns I later acquired. Now I carry safety-off but I still like the ability to use the safety.
If you are at all worried about having your gun grabbed, the Beretta is nice in that the safety is not where people think it is. People who are not familiar with the Beretta 92 and have the safety on try to press the slide release, then the mag release, then mess with the hammer before they try the slide safety. It's a great safety if you are worried about that. Most people aren't, and shouldn't really be, but it's useful to consider. Most holsters allow access to the right-side lever so you can easily and quickly put the safety on in a relatively innocuous motion, even through a shirt or other cover garment, if you think a grab might be a worry (like in a shoulder-to-shoulder crowd in an area known for pick-pockets).
To me, the F/safety is a nice extra in that it will do what the G does plus more. I've NEVER had the safety engage on when I didn't put it on. I do not carry it with the safety on. I've carried my Beretta M9A1, Vertec, or a 90-TWO on and off for over 7 years now, and for over a year I carried one of them daily (I worked at a gun shop in a bad area and wanted the extra controllability and ammo count).