We use Thinkbox Frost a lot and find it super-fast for point-cloud meshing. It would be great if there was a simple way to work between Photoscan and Frost. I've requested they support your export formats, but it would also be great if you looked to export to a format they can already import from. At the moment I have to go via Geomagic to convert to XYZ.
PTS
PTX
LAS
XYZ
CSV
PRT (Thinkbox Particle Files)
BIN rpc (Realflow Particles files)