I've seen them come up on easyclick.com off the record property but the rates, for the days I was looking at, weren't any better than anyplace else.
The description of the hotel includes mention of a 5 story swan on the roof. Easyclick doesn't do much to hide the hotels, just enough so the hotel won't have to match the price.
If S/D were to come up you'd see it posted here and on biddingfortravel. Considering people aren't even able to get ENT and occupational rates very easily I'd say the days of easy availability on PL and Hotwire may be gone.