Found this 95% Hardskin tire stashed in the garage. Must've been a good reason it's not on any bike, think it was destined for the SS 29er HT. Anywho, with no goop/sealant residue this rear-specific friendly 95% tire weighs 698 grams.

addendum: Size 2.15 and now I remember why it's not on the bike. Measures almost like a 1.9 even on wide rims, and with the 29er HT rigid a bit more cush was needed. On went the much heavier Geax Saguaro TNT which is a horrible rear tire for my needs.