would it be possible to keep application depend only on slf4j at compile time, but still be able to pass context properties to logback.xml through MDC in a standalone app, assuming I take care not to get/access any loggers until I put the context properties into MDC?

(I am aware that I could programatically get the root logger by name and cast it to logback Logger, and then set the level, and add a file appender, but this would require logback jars at compile time)