Well, I went ahead and interfaced it. Worst case...I ruin some fabric and learn something, right?
Sewed up the front, went great. The interfacing gives scuba more structure and stability. It is a bit bulky in some places, I'll see if I can do some seam grading.
Gotta cut & sew the back, hopefully will get the bodice done today.
Sandra, I find it's the best way to learn. Fingers crossed it's smooth sailing until the end
Edit: Sewed the back and...well, let's just say I'm not pleased. Will probably have to sew up the darts as there's WAY too much ease on top.