Started converting the Space Hulk captain to a salamander, and it took quite a bit of effort, but his iconography was probably the most intricate so removing it became a proof of concept. I'll try and snap a picture when I get home.
Having said that, if you want the Space Hulk poses/sculpts you have little other options but to do it.
example of a
DA Dark Vengeance terminators becoming Salamanders below (libby is a kitbash), i did 5 of these and I'm really happy with them. In that case the effort is definitely worth it as you will have a unique looking model.