Generally yes. You have warmer air overrunning the lower cold dome so that 850-700 layer typically quickly climbs above the -12 to -18C max DGZ. Sometimes you can start with initial decent ratios, but eventually the 9-10:1 piles on top of it. There’s other caveats like secondary lows and if it’s a very cold SWFE (think snow starting with temps near 0F in our area) so that there’s a longer period of overrunning lift in the DGZ. But generally it’s a 9-12:1 ratio snow before any possible sleet moves in.