Be CAREFUL when you opt to buy something from Digital-Heaven's website.
I just purchased DH_Box for FCP and when I went to check out, it gave me a link to buy WhipPan instead. Something's goofy with their website. I'm waiting to hear from them on what to do because I don't want whippan.
Not saying their a bad company or anything. Just be more careful than I was. I clicked too soon expecting it to work the way it was supposed to!
Why not shoot some generic whip pans? Take in and out clips, set key frames to actually move the image over (with motion blur), transition to your whip pan footage and then come out in the same way. Or use a blur filter just set to affect horizontal to blend in/out.