What Hucksters progressivism shows us is the fallacy of being a "social ONLY conservative." Many "social only cons love Huckabee, because on social issues he is conservative - so they blindly end up supporting a guy who is in many ways a progressive and a RINO as you state.
Some on FR get touchy and defensive when I talk about the dangers of social ONLY conservatism - and yet, Huckabee's existence as a player makes my case for me, in spades.
Huckabee is a quasi Christian Socialist.