Here's my history. Been winter cycling for 4 years. Have tried the following with the following results:
Pearl Izumi Lobsters WITH liners - good down to about 28-30. Just a matter of time until ice hooks after that
Heavy ski gloves - maybe better than most things. Good to a few degrees cooler than the lobsters
Heavy ski gloves with latex gloves inside - Sweaty gross hands, but this works pretty well. Just a GIANT pain if you have to do anything en route and don't want to go through multiple gloves. I can usually use them 2 or 3 times, but it's just a big messy pain.
Some misc. others that just suck. Why don't gloves seem to exist that are the cycling equivalent of the Lake cop boots? I have REALLY cold prone hands.
Does anyone have any good experiences?
It's probably worth noting that for someone really looking for warmth, sorting through insulation levels may be worth your time. 3M's Thinsulate product has a very large percentage of the market. The insulation is sold in different weights; I believe it's measured as weight per yard of fabric. Regardless, many glove manufacturers publish the weights of Thinsulate used in their gloves.
The River Road Cheyenne motorcycle gloves mentioned above, for example, use 70g Thinsulate. The Giro lobster claws are 100g. Google searches for "150g thinsulate gloves", "200g thinsulate gloves", and even "250g thinsulate gloves" turned up results. At the higher end, they appeared to be designed for snowmobiling. It's amazing how much difference there is in insulation levels within products advertised to be comparable.
Too bad there's not a brand-agnostic insulation measurement used industrywide. It sure would be nice to be able to easily compare prior to purchase.