I remember one incident where a GM implemented it. I suppose 'God' can make anything happen. So I saw a vision of my adn'd thief falling off a cliff...
Well, those Selentine had everything. I think I read somewhere they also had some form of central heating. Not hard, I've visited some bath houses, not in Ellesland, but I know what excellent sappers those Selentine had.... Roads, bridges, aqueducts.... If it werent' for those sappers, I don't think the Selentine would've stood a chance at ... Alesia... or the DW equivalent....
Really, when I saw a tv documentary about it I thought it was crazy, building some fortifications to keep the Chaubretians in and to keep a second force out...
http://en.wikipedia.org/wiki/Battle_of_Alesia The Siege of Alesia is considered one of Caesar's greatest military achievements and a classic example of siege warfare and investment. The battle of Alesia can safely be described as marking the end of Celtic dominance in France, Belgium, Switzerland and Northern Italy.
Obviously Caesar was a great sapper.....