I came across this thread when tracking back traffic on my website. Thank you very much for starting this thread and your interest in my cold hand solution is much appreciated.
Although I have solved the cold hand problem in the 0° to 10°C range the point has largely been crowded out by catheter and April fool jokes.
To suddenly come across a thread like this which is mostly open minded and performance focused is very rewarding for me, thank you.
As my wetsuit is so odd looking my pioneer customers in this first year truly are special personalities. The gamble they took has been rewarded with a lot of great winter surfing and no cold hands.
Thank you once again for your interest in my solution.