I mostly use Bob logistics for Robots, and I especially like Logistic Zone Expander.
In my City Block design I use separate robots network in each block, LZE make limiting supply area very easy.
As for the belts, pipes, I just like K2 colors more (purely aesthetic reasons), but I would like to use both.
Also Bob and K2 belts have slightly different recipes, with I like.
Thank You for this compatibility mod, btw)