I checked what the HRRR on the actual noaa site was doing with the ptype algorithm, and it definitely mixes in sleet along the coast but it always a snow sleet mix. I think TTs radar graphics dont know how to handle that so they call it sleet.
Yeah, it's not looking like it will be a classic uniform precip shield. That's what we are expecting. If it was just like the heavy bands but all the time, you'd end up with 3 feet.