(From the v0.1 Release Thread)
Main Campaign saves are not intended to be used in mods. This is not a problem with our mod alone. It is always advised to start a new character for Custom Campaigns.
RE: grimcalc: That is a far larger undertaking than you might imagine. It would be quite helpful for us to have as well, but the amount of work required to get such a thing going is quite substantial. At this time I’d say it’s unlikely to happen.
Edit: I mean, I guess I might be able to cobble together a grimcalc overtime. But that’d push our development of the mod back quite significantly, on the order of a month or so.