Got the 24 f/2 and BP FG20 yesterday. I must admit that *ist is no longer small with the BP., but I will be able to use AAs instead of CR2.
One thing that I must say is that the FG-20 is not as good as MZ3's BP. The new BP has so-so build quality and the worst battery compartment I've ever seen. Replacing batteries is also awkward because we have to detach the BP from the body. Nevertheless, the grip is a bit better and balanced well with larger lenses. Hopefully next week I will have some good shots with the 24 f/2. Cheers! Winston