Neurocritical care training varies widely from fellowship to fellowship. There are some NCC programs that function more as consultants, and are therefore less procedure-oriented. Other programs, like UCSF and Hopkins, are very critical-care oriented, and their fellows spend a lot of time in the SICU, MICU, and TICU. They place lines, do bronchs, intubate, and generally act like ICU physicians. Some NCC programs offer exposure to advanced neuroimaging (PET, Xenon-CT) and neuromonitoring technologies (Licox, cerebral microdialysis, continuous EEG) while others are more conservative.
In my humble opinion, a well-trained neurointensivist should be able to provide systemic critical care that is on-par with an anesthesiologist or pulmonologist, but with a better understanding of, and focus on, what is going on above the neck than the majority of people in these specialties can provide.
Well-trained NCC physicians are in relatively high demand. NeuroICUs have become in vogue, and can be a profit center for a neurology department which otherwise tends to lose money on inpatients.