You need twice as many skill points to get the same experience bonus as in DD (resulting in 1, possibly 2 extra levels), and need to double that again if you want both characters to have it.
I think that pretty much says it to those of us who are Divine Divinity veterans. What I don't understand is why the formula has been changed in such a fashion, especially since Beyond Divinity is already more difficult than the earlier game--it has smarter enemies, and fewer points to distribute among skills just to experiment.
