Newbie Question - LuaBind and exec speed.

["antic0re" <ashmodeus@...>]

Hi everyone, first post, yahoo! (hehe how appropriate :)

I am currently writing a game engine and would like to use Lua as the 
scripting language. I was thinking of using LuaBind as the glue 
between C++ and Lua as it seems to be pretty well designed and easy 
to use (from what i can see). I basically need the properties and 
methods in my C++ objects to be mirrored in the Lua world so that i 
can script them.

My question is:

How fast is the interface between lua and c++ via LuaBind? I'm not 
sure whether to implement my games class hierarchy in c++ and then 
bind those classes to Lua or whether i should implement the heirarchy 
entirely in lua and just call out to processor intensive c++ methods 
when i need to.

Basically, how much slower is it to update the properties of a c++ 
class bound to a lua class than to just update a native lua class? I 
dont mean in exact cpu cycles or anything, im just wondering if the 
way im going about it is right (i will probably create a c++ 
hierarchy and then mirror it into lua).

thanks for any help

ash