Never had cast plates on ventures before, only forged. But just put cast plates on my 5.8 titaniums. I like it, skating an 8.25 32 14.25 bbs deck on it. Slightly easier to slip out on some tricks but the pop feels a little more natural, a few of my basic flatground tricks feel a bit more natural but harder flip tricks are still taking some adjusting.
Don't like the extra height, but its largely negligible. The metal is definitely softer and wears down a bit quicker from slides it seems, could possibly end up hitting pivot cup on them. Not fully used to it yet, and I certainly wouldn't be down to skate them on anything shorter than 14.25, but I think I prefer it marginally on this board and it will probably make a slightly longer wb like 14.38 manageable.