Having just got the San Fransisco ii, and there not being an screen protector for this model yet - or none that I can find! - I thought I'd give this a try in the meantime ..... decided there wouldn't be a lot of difference in size.
Firstly, I must congratulate the seller for the speed of delivery - I ordered it on 22nd Dec and even in the last week before Christmas it arrived, Standard Delivery, the following day!!
Fiting the protector WAS pretty fiddly, but with care, perseverence and a bit of trimming around the speaker section, I got it on ok - not a perfect fit for the model but it covers all the bits I'm likely to touch with my fingers.
And there's the rub - as another reviewer or two said, it DOES leave a lot of fingermarks, which don't clean off -- great for the Fingerprint Squad, but not so great for sparkly-clean screens.
So, ok to prevent scratches on the screen, but if you want a nice smudge-free screen, you'll get through a fair few of these protectors, I'd guess.
(Don't know how it compares to other versions - I'm a total novice at this. But I guess if a semi-arthitic dim-sighted old biddy like me can fit one first time, anyone can!)