Ski gloves are good! My best cold wet weather gloves aren't cycling ones but paddling ones (which when you think about need to deal with cold & wet with movable hands much more than cycling).
A good windproof softshell. [e.g. Gore Phantom but you could easily spend more than 200 on this alone but probably not worth it - however if DH is particular brand concious mamil then it might be worth it - I don't think so though. A merino base layer - Icebreaker 200 longsleeve crewe say. Merino liner gloves - Icebreaker 200 again A windproof outer glove. Overshoes if he doesn't have them. A 3/4 or full winter bib tight - this will probably depend on what shorts he likes now as the chamois is very important.