Hmmm, I didn't even know there was such a thing as a stitch in the ditch foot. Neat. ;) I have used my walking foot in the past, which I really don't like for quilting or piecing or anything really. I don't do SITD much but when I do I have used my clear open toe foot...it seems like it's not that different from the SITD foot other than the opening is wider and it's clear.
What would be the advantage of using the SITD foot over the open toe? They look so similar to me, but maybe there is something I'm missing.