Hey, that works nicely! Granted, they do scratch and scrape but I think I can heat up a piece of metal, like a paperclip, and gently run it against the end of the tube to give it a curved edge.
Sound-wise, this might be the closest I've found to ideal. Bass is "right there" and tight, just like it is when the complys are in normal. But, the top end now has reach and balance. It's still not as much as the large dual-flange, but that's not necessarily bad. The dual flange really lets the bite in the lower-highs come out, whereas the backward Comply still lets the top end be well-represented, but in a forgiving, musical way.
Backwards Comply Mediums FTW!