thullgrim
Hero
Our group does the same as Gez, we also do it for healing potions, but in that case its the total dice, not individually. I have seen it work well for players and I have seen a 5 furn into a 1 on the d10. All in all, if my players make the 50% mark (4 on 8, 5 on 10) with the bigger die they tend to keep their own rolls, with smaller die its gets a little more interesting, 3 on 6 tends to make them think alot...