What you seek does not exist...at least I haven't found anything that will effectively accomplish both objectives. About the only gloves I have found that give sufficient dexterity to use on avionics are the military style nomex flight gloves. You can even get them with iPad compatible finger tips. That is what I use in the biplane, unless it is really cold- then I will use them for takeoff and landing and put mittens during cruise.
The nomex gloves aren't the warmest for cold preflights, so you probably are going to need a separate pair of cold weather gloves for that.