I've never tried an anal gape with a vaginal speculum, so it looks like I've got something new to try over the weekend :).
Well, now I've tried an anal gape and a vaginal speculum I thought that I should let you all know about it. I started with my usual enema prep during the afternoon so that I'd be ready when my husband got home in the evening. Once I was all clean, I warmed up with a few different butt plugs so that I would be able to keep myself open and gaping rather than just closing up. Once my husband got home we tried opening me up, and we ran into an issue. It was quite painful to open the speculum in my vagina while I was wearing a butt plug, but inserting the speculum after removing the plug took too long and I closed up. We did some experimenting, and we found that the best way to do it was to insert but not open the speculum while I still had my plug in, then remove my plug and quickly open the speculum. Once I had both holes open, my husband was able to use an anal dildo to stop my bum from closing up.
I loved how open and available it left me, and to take advantage of it my husband masturbated over me, directing his cum into both of my holes when he came. It was fantastic, but it did leave my feeling pretty sore afterwards, so I think that this will end up as an occasional thing rather than a frequent occurrence.