Well!, after lots of people raving about the Showa 377's, I decided to try a pair out. I found some on ebay going cheap so thought what the heck.
In all honest, I dont think they're any warmer than the black marigolds I've been using from Tesco's through the summer to keep my hands clean.
I've used them for about a week or so, where there have been a couple of cold mornings to test them. I deliberately left the water cold one morning (which was around 2-4 degrees) and I have to say it was very uncomfortable.
I turned the hot water on and even after doing so, my hands still felt cold underneath the gloves. I was warming my hands up each time i popped the connections from the hosereel with the contraction of the hose forcing the water out of the reel.
The only benefit i could feel of these gloves over marigolds, was that when i stopped working, due to the slightly furry lining , my hands warmed up quicker.
Oh yes, I have had a drink or too if i've been waffling a bit, Merry Xmas