I have pretty nasty Raynaud's syndrome so Pogies are pretty much mandatory for me if it is much below 40F. I often stuff an XL adhesive "hot hands" pouch in each one as well. The combo of a thinner glove + pogies + the hot hands packet works better than any one glove i've come across aside from obnoxious ski gloves. I may try some heated grip elements on my MTB grips this year or grab some heated gloves for road&mtb.
the one big disadvantage of hot hands as you know is they require oxygen, so once you get them going/saturated and throw them inside a neoprene overboot they poop out and don't last nearly as long as something electric. it's more of an emergency item, not a sustainable solution for long rides.
