Hi Michael
> What sock layers are you wearing when you decide to trudge right through?
Same as normal – Darn Tough Vermont Boot Socks, with Gobi Wigwam Liners.
> Why bother to strip the bottom half if there's snow?
Good question.
Very often we have wind. Can you imagine the cooling (chilling, freezing) effect of spending the next half hour with freezing cold wet trousers? Hazardous, seriously hazardous, in bad weather.
> I had thought snow would always be around 0 C whereas frozen ground without snow could be -10 C.
BIG mistake ! ! ! ! !
There is NO reason at all why the snow could not be at -20 C or lower. None whatsoever!
> Wouldn't using a CCF pad to stand around on regardless of ground cover be wise?
Another good question.
It's a question of trade-offs. There are quite a few factors coming into play here.
* It takes time to get the pad out and on the ground of course.
* I can alternately stand or sit on my gaiters.
* Soil has very poor thermal conductivity, so the contact layer does warm up quickly. Grass is even better.
* I usually sit down when getting my footwear back on anyhow.
So, if the ground is dry I stand on it at first and then I usually sit on one gaiter and put my heels on the other gaiter. A short bit of cold doesn't hurt. I sit down because it takes a bit of time to get ALL the dirt and sand off my feet before I put my socks back on.
But if the ground has heavy frost on it, or is covered in snow, I will get a small CFF pad out immediately. The reason is really because the snow or ice melts, and the chilling effect of that can be severe. Yes, I could manage despite the cold, but I'm a woose. Strangely, I find the water in the creeks not as cold as the snow.

Here I am wringing out my clothing, having 'slightly misjudged' the snow and rocks in the creek behind me. Basically, what I thought was snow on a rock (and therefore solid) turned out to be snow bridging a gap. Sad.
The grass was quite nice to stand on. There was no wind (for a change) so it was OK to stand there. Once I had wrung everything out I put it all back on and was OK. But I would NOT have stood on the snow!
That's the difference between natural fibres like cotton and wool (which stay wet and cold for ages) and modern 'designed' fleece fabrics. The Italian fleece ski trousers held almost zero water and dried in 20 minutes. Yes, my socks were wool, but they only covered a very small bit of my skin.
What would I have done if it was windy? Lacking a spare pair of dry trousers (never carried any) I would have put my overpants on and started walking vigorously. Works well.
Cheers