Finally! I`m back from long hiatus!
As the subject title implies, yes. LM319 is not a popular choice as integrator/differentiator combo due to it`s output pull-up resistor which is not good to directly drive capacitive load. Although it was being claimed by chip makers as fast comparator, they mean it’s fast enough as digital pulse generator for driving TTL/DTL logic gates. This means it can generate decent PWM pulses intended for class d amp purposes but at different, or should I called it harsh method as shown in schematic diagram of Fig. 1 below.