The iPad is one of those things that, at first look, may be underwhelming but after some time actually using one you can see the huge potential in it. Sure, a built-in USB connection would be nice, but the camera connection kit does work and there are companies even now working on ways to wirelessly get photos directly from the camera to the iPad.
Regarding pricing of apps, whilst it's true that many apps are free or priced very low in order to get volume sales, there are apps priced in the $30+ range - I've even bought a couple myself. Even Apple's iWork apps are $10 each and they are among the top paid-for apps on the store.
Every photographer I've shown my iPad to has said that they're strongly considering getting one, so the potential market is huge. Of course, only Camera Bits knows the true size of their customer base, but my guess would be that within a relatively short time a large percentage of existing PM customers will own iPads and, for a professional photographer already using Photomechanic, buying a PM Lite version for the iPad would be a no-brainer.
I would hope that, even judging by the discussion here, Camera Bits can see the potential and are maybe now giving some serious thought to an iPad version of PM.
Cheers,
Paul Smith
Featureflash.com