When using the conditional buildstep plugin to build an if-else structure, you have to configure the same condition two times.

Example: execute step x if strings match, execute step y else

You will have to wrap step x into a strings-match-condition and wrap step y into a not(string-match)-condition.

It would be much nicer to be able to add an else-block to do something like this:
Run if strings match: string1, string2
--> step x
else
--> step y