Since the thread Snake Barding garnered so much attention, everyone deserves to know the out come!
To make a long story short, too late.
GM allowed snake barding. However, due to an untimely death and the cost of raise dead, Harmor did not have the money to get special barding made for his constrictor snake.
On a side note, his new constrictor snake was swallowed hole and eaten by another huge monster later in the adventure.