Choose simpler stitches that will show off these dynamic threads, rather than compete with them. Metallic Chainette threads have a soft feel because of the way they are made. But if you catch the end just right they will unravel rather quickly. The needle will widen the canvas hole and reduce the drag on the thread. Use shorter stitching lengths and clip the tail end as soon as it starts to ravel.
Metallic threads can be very hard on scissors.
Keep a pair of scissors that are used exclusively for cutting metal and metallic threads. All of the velvety fibers in the needle's eye will rub off leaving the core of the thread exposed. Once this happens the thread tail above the wear spot cannot be used. As soon as you see the thread beginning to wear away, gently move the needle down the thread and clip the wear spot off the tail. These threads are not intended to be stitched through the canvas.