I couldn't find the screen grabs on your site, so this is what I do to get procedurals out of Vue.  I render them out on a cube or flatted terrain - render out at 512x512 up to 4000x4000 depending on my needs.  I take the render into PSP or Texture Maker(any other paint program will do) and save as jpg in order  to make them seamless.  Of course water/glass/some metals will need tweaking in other apps. But does not take long to manipulate at all :)

This technique could be used for all 3d apps.

As to Bryce, only reason I'm upgrading to 6 is to be able to get all my obps that were made in Bryce, tired of using alphas.  The Bryce community(especially at 3dc) have always been very generous in their freebies & all very well made, so I look forward to able to get them out for use elsewhere :).....Now to wait & see exactly well that part of the upgrade plays out ;)