So, OK, Cullenites, let's go to town on this one. I must confess... this possibility is something we, in all our 4000+ pages, have never discussed. raunchy!Cullen?? Hmmm.... not something I easily imagine, but certainly far from the "blushing stuttering virgin" some imagine.
Discuss.
I don't see Cullen as being raunchy with a crush or someone he was flirting with, but once he was actually in a relationship and was certain that his affections were desired, I could see him developing the confidence to... erm... express himself a little in the bedroom context. 
For me, Raunchy!Cullen would be Cullen in a relationship where he feels trust and security and can be more open about his desires and less chantry-appropriate feelings.
I'd be shocked if he was... at the same time, I imagine his costume would be a bit more fun to make than Solas'. Unless they used one of his later/more complicated armour options for the kit. 
How to make Solas' costume:
1.) Go to Eastern Mountain Sports or other outdoor activities store of your choice.
2.) Buy long underwear and a camping vest.
3.) Done.

Has anyone else had a chance to read the Masked Empire yet?
I started it while my residents were chilling in their rooms, but didn't get very far into it. I'm enjoying it so far.