@ssamulczyk@cycling@rower I could recommend "lobster" or "split mitt" style country skiing mittens/gloves. Better than gloves because your adjacent fingers warm each other but your middle and index fingers aren't tied to each other. Maybe get a size larger than normal and you can wear thin merino wool gloves underneath if it's really cold. YMMV but heated gloves never ever seemed worth it even at -15°C.
This is what I mean https://varuste.net/en/p100526/swix-endure-split-mitt