the 10-8 is really good on the Staccato, it works very well. I have one on a custom 1911 and I wasn't terribly thrilled with it (seemed to just poke me wrong), but it feels great on the Staccato.
I have one one a ACW Quantico HC, I actually had to do some fitting (I did a horrible job). I don't know if it was out of spec or what, but the channel was too narrow and the tab for the pin (?) wouldn't fit. You can't see it, but my work is ugly. Yes, I got the right one.