Surveyor was a separate company that FR bought and added to their lineup.
Roo/Shamrock are made at one factory and Surveyor is at another factory. same thing with Palomino.
Surveyor advertises them as "superior" to other hybrids, but i found them to not much different than the Roo/Shamrock.
they did seem to have better canvas, maybe Sunbrella, on their hybrids.
they may have certain components that are better quality but overall, the quality and fit/finish was about the same.
we too, were interested in the 233T. but the DW liked the 23SS layout better, especially since visitors didn't have to walk past the kitchen to sit down.
there was someone else, DarkRose, who just bought a 233T a couple of weeks ago and posted here. he asked questions about the shepherd's pole. he got pics from another 233T owner, JimChow.
his post is a few below yours.
be sure to post on the Expandable section here at FRF. there's a Surveyor section there.