Oh, I see, I mis-read your post! Gotcha. That's funny, because I was thinking "I could see a double increase causing a hole..." LOL
Ahh, I found your Rogue Hoodie with a google search yesterday. It's really funny, because I've stumbled upon it twice today by accident, since then! I see what you mean about it being a buzz in blog-land!
There are two double increase combo's I can think of that don't create a hole.
If you don't mind there being a central stitch between them, you could do:
M1L, k1, M1R
If you want them side by side, you could use these two (the first one works off the left edge of the last stitch, and the second one off the right edge of the next stitch):
kinc, followed by Lifted Increase Right.
(definitions are on the increase page)
Both these double increases look great.