It surely works perfectly!
Okay, it was an attempt of mine and I am glad it worked. Take your Lomo LC-A+, insert a film and mark the beginning (!), add the Splitzer and put all together in the lomo-KRAB, the underwaterhousing of the LC-A+.
Now breathe in, hold it, and shoot! shoot! shoot!
In this case I shot the bottom layer and satomi shot the top layer… So grab your accessories and start shooting!