Can I use Sunday Guitar patches in Logic?

You can't bring over the Sunday Guitar patches as they are over to Logic. 

The channel strip busses and all the complex mappings that enable the key features in Sunday Guitar like Board Builder don’t transfer to Logic and they will end up breaking in the process. Sunday Guitar Version 2 is designed for live guitar stereo amp and pedal modeling. However, you could always record the MainStage audio from Sunday Guitar and bring that audio file into Logic to use, that’s how we would recommend using Sunday Guitar with Logic recording projects.