When I bought my Sequentix Cirklon I opted for the rack-monuted break-out-box (BOB) which gives you loads of CV and gate connections for interfacing with modular/CV controlled instruments. The problem for me was that in the studio, the modular system is not really ergonomically close to where the Cirklon break-out-box would have to be located so I set out to condense the features of the BOB into a euro modular friendly panel.
Here's the standard BOB
And here's my euro version!
DIY euro modular sequentix cirklon