Default App for Hook Links

The new deep linking for PDFPenPro is very helfpul. However it appears that for the link to work I need to set my default PDF application to PDFPenPro.

Is it possible for me to keep some other PDF Reader as the default but have Hook bypass that and open using PDFPen Pro when I choose to open a PDF using a Hook link? For example if we changed the script to create links as pdfpenpro:// would those links then. open in PDFPenPro regardless of the system default PDF reader?