A quick follow-up to my above post. Verdict: very positive.
It took maybe 10 minutes to install the Volquartsen extractor. I only ran a couple magazines through but experienced no stovepipes, very nice results so far. (This on top of the fact that I hadn't cleaned the 10/22 for a while, so even dirty it cycled just fine. The stovepipes occurred every previous range trip, clean rifle or not.)
Big improvement for me, just too bad it seems to be such a necessary upgrade.