After just 2 months this thing was squeaking with every single pedal stroke and as I rode I would envision the saddle as a person and I would imagine myself throttling that person to death. I tried oiling in every obvious place: all around the spring, and its screws, and all around the front screw, and proofided deep into the cracks between metal and leather, but the squeak was undiminished,
Anyway, the included image shows the magic spot (for my horrendous squeak anyway). Right where that bottom-black-metal-bar curls up around the front bolt, it rubs against the top-black-metal-bar whenever the saddle flexes. Oil exactly there. 100% SOLVED (for now).
Don't try to locate the squeak with the saddle still on the bike, it's impossible to pinpoint the location. Take the saddle off, lie it upside down, press on the springs like you're doing CPR. Lean over and try to pinpoint the squeak while you press. Try not to go mad.