I took your advise guys and got myself a used pair of Stormsheild EXO 2 gloves from eBay for �50.
They are thinner and more comfortable than my other winter gloves, Richa Ice Polar GTX.

Was out and tested them last night.
FYI I have no handguards on the XTX and the temp was around 3�C.

After an hour of riding my fingertips were cold, but toasty, almost sweaty, further up. I guess it was the balancing point between cold fingertips and warm hands.
All in all they worked way better than the Richa gloves specially considering that they are thinner and more comfortable. With the Richa my hands are literally frozen after an hour and I have to stop. With the stormshield, the thought of stopping didn't cross my mind, I could just keep on riding. I will install handguards on the XTX down the line and I expect that to improve the gloves' performance even more by deflecting the cold winds.

To round up I'm very satisfied with the purchase and looking into getting the stormshield heated vest that connects to the existing wiring of the gloves with the splitter cable.