Carefully drawn, when you enlarge the typefaces, the subtle irregularities become more apparent and harken to hand lettering of the past. Oilvare also includes a few discretionary ligatures that you can turn on or off in Open Type savvy programs.
Here's a tip for using layered fonts: When stacking text frames on top of one another, InDesign aligns everything from the start-Illustrator, however, might be vertically misaligned based on how it measures. If so, be sure to click and drag out a text frame to start (don't just click with the cursor on the page). Then select the stacked text frames, go to Type in the menu bar > Area Type Options > Offset: First Baseline and select "Leading" or "Fixed".