cooking meat in slowcooker?

[amalnahurriyeh]

I'm a vegetarian who only really cooks meat from scratch on holidays, so I'm hoping someone here can help me out. I've got a rib-eye roast (a smallish one) for Christmas dinner tomorrow, and I'm considering making it in the slow cooker, so I can use the oven for cooking the veggies without having to worry about the timing for the roast. The original plan was to roast it with a mustard-white wine glaze. Can I do this in the slow cooker without any loss of flavor, or will it really need the high heat sear of the oven? Any suggestions for how to adapt the recipe?