I'd agree with the direct port suggestions - I doubt with HD coming relatively soon they'll make any more effort than necessary in releasing this. Will they include the download packs? I hope so, I really do.
As someone who can't get fully used to the tiny little thumb pad on the PSP, it'd be a godsend to play Pulse on the PS2. Great as Pure and Pulse are, I'm sure they'd still run better on a proper console. Just my twopence worth.