Lacking BG1, and never ever having played it myself, I'd quite safely say, no I couldn't ^^;; however the scripting is not complicated, someone could do a version for BGT easily, I think.
First of all, I'd like to know if the Staged XP caps are BGT Compatible (As BGT adds new chapters to the game, I fear it might just not work at all...)
Second of all... Could you, Zyrean, please make an Tutu/BGT version of this? (One that also adds Stage-based caps to the BG1 portion of the game?). I somehow have the feeling that that would make a very good hunting...