Bookworm - you run the risk of arguing the same sort of semantics as Pace did about 'pure snow'.
If you want to go flying in the snow, crack on but it comes with several health warnings:
Poor visibility and the possibility of whiteout (can't distinguish land from cloud). This makes trying to continue VFR much more risky and if you have no TCAS or radar service makes deconfliction with other traffic far more difficult.
Possible icing in the RASN.
A high probability of icing in the cloud that is producing the snow/sleet, greatly reducing your IFR options. Once you are in it your airframe will be below zero amongst a mixture of supercooled droplets and snow.
All the ground based issues like slippery taxiways, runways, banks of slush and snow etc.
If you want to risk all that just to fly in falling snow...................