I have this installed and working on 1.3.8a, but I'm having one little issue with the comments showing in Firefox for compact mode.

When you search for a list, it displays fine. When you're viewing your own list and switch it to compact, the comments disappear and the table is thrown off- empty space at the end of the heading row and empty space at the beginning of the product rows. Other than that, once I went through and applied all the fixes, it seems to work fine so far.