Can flexible filaments such as Ninjaflex or TPE be used with a stock Da Vinci 3D printer? Probably.
Preliminary testing and multiple trials indicate that it is possible to use a stock Da Vinci extruder with minimal modifications to print this unique material. Additionally, it may be possible to use a stock firmware (1.1.J) and XYZware to make objects printed from Ninjaflex.
Successful progress and encountered pitfalls are being documented as this journey unfolds.