There is one obvious issue with those horns: the points where they protrude from are right about where the Demon's beam turrets should be. The horns are big enough that the beams will often go through them in the game and look stupid.
I think the horns look ridiculous (even if it wasn't supposed to be a Demon) in those pictures, but I'll wait until the entire thing is finished before passing any further judgment on it.
On a side note, you guys should stop calling these things HTL ships. That designation makes no sense at all.
Call them high poly ships or something. HTL has been a standard feature of games for several years now and has nothing to do with the model detail directly.