FWIW I used to employ the guys/gals with an instructor rating so they were multi talented. I needed people to instruct of a day and fly freight at night. I must admit none of'em could fly outta sight on a dark night, so i had to retrain them. Bottom line here is.....make sure you can fly an aircraft, not just go through the procedures.
If they were good guys, I'd give them a multi endorsement for free. Worked pretty well for me....and them.