1. Unfortunately not yet. There is a solution under development, currently this partially work only for custom fields, not taxonomy terms. The reason is, that there are too many variations to send the information on checkbox selectors. Some prefer serialized arrays, some comma separated values. This, and other problems with names and values need to be resolved somehow first.
I will try to implement a basic solution to the upcoming release though.
2. You can change the search to redirect to a custom URL, if you want to. However, please keep in mind, that permalinks need to be resolved on the server side as well, either by a .htaccess rule, or with some sort of function. This option is designed for systems where there already is a custom permalink structure for searches, so it can be adjusted to it.Best,
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