They make them in 0.8 and 1.1mm sizes (drill size 1.3 or 1.6mm respectively), and they cost about £8 (from RS) for a bag of a hundred rivets. I wonder if they'd be of much use for high density work; even with 2.54mm pitch DIPs you'd have trouble running a track between two adjacent rivets.
The insertion tool appears to be a modified automatic centre punch; RS have it listed under P/N "BG11" (same as on CIF's website), but Farnell only list the rivets (BG9.S and BG10.S) and the BG9 "metallization kit", which isn't listed on CIF's website. Is the BG9 a cheaper version of the insertion tool, or just a bag of rivets, or something else entirely?
At £8.44 +VAT I'm tempted to put one on my next order (I need some thin carbide drills and 512K RAM chips anyway) but was just curious if any listmembers had used these.