Are they pleasant to work with? Hard to say. It's like he doesn't have much invested in any particular personal transaction, so this feels like an irrelevant question.
Do they work well in a group? Not from what I've seen. He needs to work on his own, just stepping into other groups to give advice or contributions of handy tools, so forth; exactly what he does now.
-- from the Deniz archive
ssh+2FA to all your machines, anywhere, without opening firewall ports.