Is anybody else doing this? I find it to be very fun. The LP is my only piece of gear with CV.
I NEVER DO THAT!!
Good one stiiiiiiiive 
Yes, it used to be my only piece of CV gear too. Being able to control volume with the (often MIDI-sync’d) built-in LFO is a bonus for things like tremolo sounds. My only wish is a “LFO DEST 1:OFF” setting to remove the internal modulation routing when patching back into itself, in a modular fashion. I asked Amos once and it’s not possible, as the CV out signal IS taken directly from that internal routing.
I’d like to hear of any semi-modular patches using only a CV-Out-Modded Phatty, if anyone is willing to share!
Regards,
David
NZ
More seriously, I tried a couple of times just to check it works I cannot remember what I patched though.
Putting a CP-251 in between the LP CV Outs and the LP CV Ins gives you lots of new sound shaping power.
For those new to the Little Phatty, Control Voltage Outs are an optional mod (and well worth adding):
http://www.moogmusic.com/products/phattys/little-phatty-cv-out-modification
CV Outs were also available pre-installed on certain exclusive versions from several retailers.
Here’s a video showing some of the things you can do with CV Outs:
I’ve contemplated one of these. The hesitation is because there’s no way to sync to clock. I looked for an MP-201 for awhile but dang they’re expensive.