Thermal qualities of kid leather gloves are quite poor (as are that of nomex suit - it won't light or melt if subjected to a flame but if temp is 1000 degrees outside the cloth it will also be 1000 degrees inside it - that is why one must also wear a thermal layer of a natural material (usually cotton long-johns and roll neck) for fire protection.
Same is true of the gloves, they should be worn with silk liners.
(When hovering a gazelle in Kenya cockpit temp can get pretty high - well over 40 degrees - not many wear the thermal layer there!)