No spotlight to steal, Uncle Joe!
You're absolutely correct about the strong King Crimson influence. KC were one of the pioneers of this genre, and anyone following them would name them as an influence. In particular, Robert Fripp's "Frippertronics" as he used to call them are in evidence with Richard Barbieri's keyboard & sampling work, along with the creative drum signatures that Bill Bruford did with them. KC's 1969 song "21st Century Schizoid Man" went places that no one previous had gone, and would still be considered a Prog Rock monument.
There's an interesting tie-in between KC and Porcupine Tree, in that PT's drummer (Gavin Harrison) joined KC in late-2007 and through 2008, providing some reworked versions of older KC classics, with more emphasis on percussion than before. Hey, if you've got Gavin at the drum kit, you're going to put him to work, eh?
Good ear to notice this!