Fuel savings and condensate reclamation have proven themselves to be consistent over three timed runs of 30 minutes each at the same power setting (3/4 throttle):
Fuel consumption has dropped by 10%, and condensate reclamation is about 35% of boiler water consumption, extending operating time significantly from 25 to 35 minutes.

Still a few minor issues to solve like optimizing condensate filtration and such. No biggie.