None that I am aware of.
I use minis to help show what the battlefield looks like, but try and avoid wargaming style rules (such as the newer DnD editions) as the extra complexity they add can take away from the overall pace and fun of tabletop RPGs for me. I think RQ is crunchy enough without these rules, and given it has less area effect magic, suffers much less for lack of them. It also opens up more swashbuckly improvised play that might otherwise be stymied by following official combat miniture rules.
Something with much less crunch (savage worlds, I'm looking at you) seems to play very well with minis on the other hand.
