Zane Johnson , Apr 17, 2007; 10:13 p.m.
Well, I don't have either camera, so take my words with caution. I really doubt there would be a problem sharing cards between two Pentax cameras. I have shared cards between a Kodak and a Canon without a problem, each camera puts its pics in its own folder on the card.
To be sure, just copy the images from the cards and then try the experiment yourself.
One last comment--don't format a storage card on a computer and then use it in a camera. Always format the media using the camera.