It really sounds amazing, I look forward to seeing some more.
Regarding the City Guard and the no Psychics, I'm of the opinion that (a-la Terry Pratchett) the Guard should be made up of all races (that will work together) and utilise the best of their abilities, after all in a group of guards, if one is psychic, what good does it do them if that 'person' is not in charge. Obviously you need ranks in the guard, that way you can target the 'man in charge' and blunt their response.
Looking at what you've got,as the Skuldur relies more on echo-location and is the cave dwelling version going to react more to light and its effects, afterall in low light conditions, more light is very distracting (that is if you use eyes, yes, I did read about echo-location, but eyes are still eyes and those adapted to living ion the dark will be overloaded by light)
I am really looking forward to this and see just where it goes, keep it up guys, but please more visuals (be they screen shots or movies) to give us ideas and enable us to be a little more 'pointed' with comments.