For what its worth ............ I think you would be very fortunate to go from flying a CRJ to a corporate or charter gig flying a CL604 ..... It is my opinion that CL604 positions are on a pretty equal par of getting a G 4 position there are not alot of them out there that do not require you to have time in type and be typed ............... I may be wrong but i have not seen many CL604 open positions and the ones i have seen have required type rating and time in type ...................
but ya never know
but ya never know