You are right about making your own logbook, when it meets the standards.
It becomes difficult when you already have a licence and want to extend it like a B1.1 to a B2 or vice versa.
Therefore the
Swiss-Logbook is a great help.
You just take the tasks that are B2 and not B1.1 and that is it!
or
You just take the tasks that are B1.1 and not B2 and that is it..
Cheers
easaman