Well, I just paid for a 24/7 OSS in .45 here a couple of weeks ago. Problem is I am still TDY here and since it's out of state for me, I have to wait until I get backhome next week to pick it up fromo my local dealer.
It's a slightly used tan frame I got for $335 but it's got no spare magazines (ordered a couple up today from Midway), box or anyting other than the pistol and magazine. Not a big loss I suppose and it looks like it's in great condition.
As far as the trigger goes, I haven't had a chance to fire it yet but from what I noticed in the store, it reminded me of the H&K LEM trigger I have on my USP-40C. In SA mode, there is a lot of take-up until the sear is engaged then drops the striker. Cycling the slide, you move the trigger a little bit forward to it's reset position and it's not all that far but if you let it go all the way forward, you are now taking up the slack again. If however the striker drops and the round doesn't fire, a heavier trigger pull to retract the striker against the spring tension until it is released and fires the round. How does that compare to a LEM trigger? Where you see the word "striker" in the description above, strike it and insert the word "hammer" and that's a pretty fair comparison. The differences are that there is a manual safety you can use with the OSS (although you could put a safety lever on an H&K with a LEM trigger if you want) as well as the ability to decock the striker which IIRC, there is no way to modify the LEM trigger to do this.
All-in-all, I am really looking forward to getting back home next week, pick it up and run it through its paces. It's big test, like all the other .45s I have in my collection have tired to do and just didn't quite get there, is to see if it can claim the title of "HK-killer". Over the years I have bought many different .45 ACP pistols to see if there is anything that can outperform my old USP-45F and so far, everything I have tried has come up short so we'll see if the OSS has what it takes to knock the king off his hill.