External ADSR from Pigtronix

http://pigtronix.com/products/ASDR.htm
This seems like it would be a pretty good addition to my semi-modular setup. Has anyone tried this with the voyager? The only part I’m not sure I would like would be the sustainer-part. This seems like it could be used similarly to the voyager ext-in EG. I just thought you people would like to see it!
Josh