Fitting some hand guards

[sc0ttie]

I have a bit of a problem with bad circulation in my fingers which is the majority of the problem for me.
I do have very good gloves that last me about 1/2 hour when its really cold was just looking at guards to extend that comfortable ride time but for the amout of time I actually can get out in the winter im not sure heated would be worth it.
I have even thought of a bearmat size sort of shield attached to the glove that covers the fingers, just to take away the wind blast, might get in the way when going for the leavers but it would be no longer that my fingers

So do I, surgery on veins & artery in my arm from years ago. I was wondering if muffs are easily removeable, i.e. quick detach/quick reattach and also if when it rains and the bike is parked outside will the inside get all wet and make your hands colder? Having never owned muffs, I don't know but those thoughts kind of put me off muffs.