Sure, but veils can do both linear and exponential.
-- Cormallen

And a whole lot of response curves in between. This is one thing I like about using the 1/2-Veils clones...if you want to mess with the way the VCA is handling modulation levels, it's just a tweak away. Plus you'd be surprised at how quickly you'll go through a Veils-worth's of VCAs for just audio duties alone.