Not really sure how to search through this thread, so I don't know of the following has been reported already.
I accidentally "equipped" the codpiece (the one bought at the Outpost for the Hunter in the church) while already having the cursed armor of anal torment equipped. This resulted in the codpiece vanishing from my inventory. I wanted to test if this would happen with other items as well, so I clicked on the laced panties, and they disappeared as well. Later on, when I removed the cursed armor with a scroll, I found the laced panties equipped on the character. (Underneath the cursed armor?). I removed the laced panties in the hopes that the codpiece would show up, but it didn't.