Circumvent "Get input before the form is displayed" field

Circumvent "Get input before the form is displayed" field

For our mobile users, we have:
  1. a single-line field
  2. with QR and barcode scanner enabled, and
  3. "Get input before the form is displayed" enabled.
This works as expected when users enter the form "the normal way".

Now, I'd like to enter the form with a URL parameter that's passed to this QR/barcode/"Get input..." field and bypass the scanner, but this isn't happening.

Basically, "Get input before the form is displayed" trumps "on Load". 

My "on Load" scripts fire when I enter the form (I tested this with a sendmail statement), but I can't get the scanner to disappear even when I feed the field a parameter.

Zoho Support confirms that this is expected behavior, but I thought a guru out there (like Damien Cregan) might have found a way around this.

Thanks!