If you want to make the most of your Ditto and other effects, you can combine the loop order switching with FX loop bypass switching: Especially useful if you have a tonne of fx. I built a dual looper (i.e. two loops, both bypassable) with a third switch that reverses the order:
The looper/juggler pedal is bottom right. Green loop (bypassed via the right hand footswitch) is the front row of pedals, containing all the effects I know i will not want to send the Ditto through (mainly vile fuzzes) with the Ditto at the end so I can record and loop filthy guitar and can cut the looped guitar in and out without touching the Ditto; The red loop (bypassed via the left hand footswitch) contains the back row, all the effects I might want to record OR use to process the loop. The central footswitch is the Juggle switch, and a red/green bicolour LED shows which loop comes first in the chain.