Yes, but I don't import scrap supplies into lightroom. It gets really bogged down with photos so I use it primarily for edits, then I push the image to PSCC for a final edit where I have my open layout working when scrapping.
But I mainly want to see them when I am looking in the folders. So the link I posted sorta does that, well it does, but it changes the extension of them to do it. In Windows 7, there was a simple codec that showed the thumbnail without changing anything other than what the image looked like displayed in the folders. I think Adobe should come up with that option for us. Like PDF files have a "save thumbnail" options. PSD's should too.
I am about to try ACDSee 20 tho and see if I like it better than bridge.