I personally have not pinned DSIP yet. I've always made it into a nasal and for me it works great. You may find that you need a higher dose of the nasal vs subq. Just keep in mind there is a decent part of the population that simply won't respond to DSIP no matter the dosage. It has to do with an individuals gnome.
If I were you, I'd pin it first and see how you get on. Finish that cycle, then wait 4 weeks and try a nasal cycle. Then you've got actual data to compare and share with us.