Lisa, where have you found the cashmere or alpaca liners? I have the Smart Wool ones, which I have been wearing under a pair of one size up unlined full fingered gloves. This has been good down to temps around 34 so far, but I still have a little tingling in my index fingers (weird). I absolutely cannot shift my brifters with the PI Amfibs I've had for years, so wearing liners under a "warm glove" just defeats the purpose of wearing layers for me. My hands were getting numb from wearing the liners under my regular full fingered gloves, because they were so tight, hence getting bigger ones. I do wear the Amfibs when I ride my Jamis, with trigger shifters. My thought was to go to chemical warmers for temps much lower than 34 or so, as I have a huge supply that I bought for winter sports from a hunting supply place. But, I'd rather try the alpaca, and save the chemical warmers for a last resort.
2015 Trek Silque SSL
Specialized Oura
2011 Guru Praemio
Specialized Oura
2017 Specialized Ariel Sport