E120 PIC CHALLENGES CRW LC DEP CLRNC TO TURN TO HDG 210 DEG AFTER DEP; WHICH CONFLICTS WITH PUBLISHED DEP PROC.

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WE DEPARTED CRW. THE TWR TOLD US TO FLY HDG 210 DEG AFTER DEPARTURE. WE WERE DEPARTING RWY 23. THIS IS A STANDARD CLRNC AT CHARLESTON. RVR WAS 800 FT. THIS HEADING; IF FLOWN IMMEDIATELY; COULD RUN YOU INTO THE SIDE OF A MOUNTAIN JUST PAST THE END OF THE RWY 23. THERE IS A DEP PROC TO CLB TO 1600 FT PRIOR TO TURNING ON COURSE. TWR SHOULD NOT GIVE THE CLRNC TO FLY HDG 210 DEG IMMEDIATELY. THEY ALWAYS DO THIS. I THINK; TO A PLT NOT FAMILIAR WITH THE DANGER OF TERRAIN CLRNC; IF YOU IMMEDIATELY TURNED TO A 210 DEG HDG RIGHT AFTER TKOF; THIS PRACTICE AT CRW IS A VERY UNSAFE PRACTICE IN VFR; AND DOWN RIGHT DEADLY WITH RVR; 800 FT! I FLEW THE PUBLISHED DEP PROC AFTER TKOF BEFORE TURNING TO 210 DEG. I DID NOT QUESTION THIS CLRNC DURING TKOF; I JUST FLEW THE DEP PROC. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: ON SUBSEQUENT FLTS FROM CRW; AND ESPECIALLY WHEN WX WAS A FACTOR; THE RPTR HAS ADVISED ATC THAT HE WOULD INSTEAD BE COMPLYING WITH THE PUBLISHED IFR DEP PROC DUE TO TERRAIN. ATC HAS THEN RESPONDED WITH 'ROGER' OR SOME SIMILAR PHRASE. THE RPTR QUESTIONS WHETHER ATC IS USING CORRECT CLRNC PHRASEOLOGY SINCE THEY NEVER QUESTION THE FLT CREW WHEN THE PLT ADVISES THAT THEY ARE INSTEAD FOLLOWING THE FAA PUBLISHED DEP PROC. THE RPTR IS CONCERNED WITH COMPANY 'ENG OUT PROCS' IF THEY TURN IMMEDIATELY AFTER DEP TO HDG 210 AND HAVE AN EQUIP PROB. HDG 210 DEG IS VECTOR TO SNOWBIRD (SOT) VORTAC; APPROX 150 MILES FROM CRW.