Depending on what and where you are tracing, scripts likely already are not compatible between different operating systems which support Dtrace - FreeBSD, Solar

Depending on what and where you are tracing, scripts likely already are not compatible between different operating systems which support Dtrace - FreeBSD, Solaris and Illumos, and MacOS all have different system calls (for example). That said, there are _many_ points of commonality which will apply to Windows too - USDT probes, function boundary tracing etc.