Unlike modern Kontakt libraries that take minutes to load, a soundfont version of the SD-90 would load instantly. For composers working on low-spec laptops or mobile rigs, a 200MB soundfont of the SD-90 is far more practical than a 50GB orchestral template.
Edirol SD-90 units appear on eBay and Reverb priced between $250 and $500. Because it is a USB audio interface, you can plug it into modern Windows (drivers are dicey on Mac M1/M2) and record the audio output. edirol sd-90 soundfont