They've arrived and they're very nice. Some really nice touches like one of the crosbow armed goblins is holding a bolt in his mouth while he cocks the bow. The slingers are nice, and the bowmen all look perfectly usable.
They are a bit taller than the Caesar goblins, by about half a head in some cases. But look, these are figures of fictional beings the discrepancy isn't really an issue. It could be explained - as I intend to do - that the Northern Forest Goblins (the Caesar Minis ones) are generally smaller than the Big Chin Goblins from the southern hills or something like that.