To the OP,
I'm in the same boat as you. I finished my application, and have completed the force fit training for the SALH in Medicine Hat. Eventually being trained as a Crewman, they are a Armored Reconicense Unit, part of the 41 Brigade Group. I am currently employed as a Medevac Pilot in Medicine Hat working week on week off schedule. I'm not really sure what to expect either.
I think one thing that hasn't been mentioned, is to be open about it with your employer. I'm lucky because mine is ex Reg Force he's been supportive.
In my interview with the Sergeant Major, he mentioned they weren't interested in messing with my full time job either. As earlier stated the Reserves doesn't pay well. But they do want to see commitment.
If anyone wants to share some experiences from Basic, and BMQ Land I'd be interested in hearing.