opinions needed...

[Greg Montalbano]

(...I know you folks are usually shy about giving them...)

I've been recommissioning my old modular setup, and have
one leftover SSM 2040 filter chip for the auxilliary filter module
-- was going to implement a simple switchable lowpass/allpass design,
when I noticed it would be just as easy to make it a switchable
HIGHPASS/allpass design.  I must confess that in all the years I've
been noodling around with this stuff, I've never much used highpass (only
synth I ever  owned that had one was my old MS-20) -- aside from 
the obvious bandpass result from combining low & high, is there much 
use for this mode that I've been missing?

Thanks, eh?