Some kind of leg warmer for the tripod legs is a good idea. I use handlebar tape on two legs. I have velcro pieces attached in several places to grip the remote release. If I use a radio remote for the flashes, this is attached to one of the velcro spots as well.
The L-plate doesn't just give an option for shooting in portrait orientation, it serves to protect the 10-pin socket as well. This plate isn't the best choice in the winter as it has to be removed to change the battery in the grip.
This is how I prefer to have the wrapped legs oriented as these are the two I touch most often.
Here is a close-up of the velcro attachment for the remote.
I shoot in the cold and snow quite often, so it's nice to see your setup. Do you ever use a rain sleeve or other protective device? I shoot in the rain too, so I've got a couple of rain sleeves, but they are cheap plastic things that can be reused, but not forever--I might like to acquire something more durable eventually...