Welcome, from Southern AB. I think that I will always have both the Flow and KSO as part of my wardrobe. I've had plenty of opportunity to experiment with running in VFF in all kinds of weather weather. My favorite cold weather mix are Flows with socks. Even when wet from puddles, slush, or melting snow, the neoprene provides adequate insulation (when I run... gotta keep moving). As the weather has started warming up, however, I have had to move to KSOs to keep my feet from sweating terribly. I'll continue to use my Flows when it is cold or for kayaking, but they are not a warm weather option in my opinion.
We've had a wet, slushy couple of weeks. Typically, I would wear a pair to work and then change into dry ones once there. I have gotten tired of always waiting for my VFF to dry, so I started going barefoot
more often. Bare foot has been the best waterproof material I have come across yet :-). My feet have even gotten more use to the cold, but I am glad to see the temperature finally begin rising.