Another Steve Wilson fan here!!!
Alex Lifeson and Geddy Lee used to have Logic in their home studio rigs.
Not sure what they use now days, though I think Alex used PT for mixing
the most recent Rush DVD's.
Roger Waters was quoted in an interview that he was using Logic for writing
some new material not long ago.
Dave Meegan who has worked with many artists over the years uses Logic
and has used it on at least two of Marillion's albums..."Anoraknophobia"
and my personal favorite, "Marbles"