I think my group are going to play it that they dont occaissionally as it makes for a real interesting rule change.
Nothing wrong with a few house rules
At least not if one knows they are house rules and preferrably if everyone playing agrees on them!
I've had games where people didn't...and one might say they were less interesting for it.
Oh and I also feel left out, someone needs to produce and distribute official versions of this expansion pronto!