Take it easy David.... Yes, the Grace is a good boat by all accounts. No argument here
The Grace *does* offer some non-tech and/or wreck trips like your photo trip, but not very many compared to the tech and/or wreck ones (though it is true that the wreck dives are possible within the 40 m recreational limit). This season's schedule for the Grace includes just one dedicated photo trip (other than the research trips with the MRDG which include photographing the sites), and two non-wreck safari trips of a total of about 25 scheduled sailings from the month of May onwards. So when I said that the Grace offers tech and wreck "almost exclusively," there's a basis for the statement!
FWIW, the Kaleebso also does a bit of wreck/tech, but the proportions are slanted the other way, with only a few sailings scheduled for tech and wreck.
In the end, it just depends on what tboxcar feels like doing when the time comes.
Q.