I'm considering a ZDP189 blade for edc, and was thinking about getting it in combo edge. I have a few knives with this profile (SOG flash II, CRKT Kiss) and I do enjoy the utility the serrations provide.
Kitchen: Simple tasks like cutting a fresh crusty baguette seem to agree with the combo edge, and I have only had good experiences with most food-prep type stuff.
Yard: For plastic strapping to breaking down boxes, the combo edge seems well suited. It does retain some dirt during some garden/weed work but the serrations wipe clean easily.
'rescue:' I haven't been in a situation where I've had to cut through seat belts, but forum chatter seems to favour serrations in a rescue knife.
Just putting this out for your input.