Not as good as ditto tc 4 for series looping (verse, chorus) Probably better for parallel loops. Problem is you need to make two switches to change loops(eg: verse to chorus) whereas the TC4 only requires one switch. However, the Boss does allow you a bit more choice of loop timing.
Complex to use, manual isn’t great but online videos help
Hopefully more reliable than the ditto though (TC 4 often fails if knocked!)
Good that you can use batteries which is good for quick set up in a pub.
Loop playback volume isn’t super easy to control in a live situation, can get too loud