Naah, TBH they have to be seen for you to get the full effect of how cool they really are. Also they look awesome without shaders too - so no worries about that.
If people want to experience them and see how cool they could be then do the following:
Start single player.
/download skulfuk
(wait a few minutes - I've a lot to download)
/lp 0 skulfuk
Then play. You'll notice my flames etc activate when you start playing & once you've finished watch the replay for the full effect.
Also I've got one of the new bumpmapped textures on my head - I've done a pretty crappy job of the bumpmap, but you'll get the idea.
Then hopefully you'll see how awesome they are & feel the need to spend some money to get them.
Remember that every penny spent keeps the game & servers alive. ;)