Sorry for the silence. It hasn’t made it’s way into an upcoming release, but we are well aware this is a problem.
Unfortunately there is no “Skip” button right now, but if you want to skip calibration you can hit the ‘start’ button followed by the ‘stop’ button right away. The printer will stop moving before it starts dispensing.
We are toying with the idea of allowing the printer to dispense the priming pattern to the left of the limit switches (on the aluminum cover). Entirely outside the printing platform so it does not interfere with the substrate.
Unfortunately we haven’t been able to explore this further since we’ve been focused on a big update that’s coming soon. Once that’s out of the way we’ll have more time to tackle this.