Hi Tom,
So glad you enjoyed the music and the rendering. I recently had my concert band piece played by the university, and heard some wicked marimba music, which inspired me to write something for it (and of course, strings, since I have access to some musicians that might play it). I agree that pairings like this should be more common, but then again, I play accordion, so I'm used to being on the outside looking in and always finding ways to get the accordion to "invade the sanctity of a string quartet." :)
As for sheet music, we just launched the new site and have put up our first piece, Capriccio Cattivo on Sheet Music Plus: https://www.sheetmusicplus.com/title/capriccio-cattivo-digital-sheet-music/20741184
They'll be added there and to the site in due time, but right now, I'm finishing up scores for actual performances, including a few different works being played in July. Selling the pieces really isn't worth the time it takes to make a beautiful score, so I'm more motivated to finish pieces by actual performers/ensembles that have agreed to program the works.
Cheers!
Dave