The CTL-Sys is more of a vacuum cleaner than an actual Dust Extractor. It's small, light, incapacious, non speed/power-adjustable, and lacking the bypass cooling that almost all quality extractors have. Which actually makes it almost ideal for what you're proposing.
I agree that a LongLife bag would be advantageous. The standard (3.0 L?) bags are ridiculously small, but perfect for "a few cuts". But you'll be forever buying new ones with intensive use.
About the only downside with using the littlest vac is that it comes standard with a 3.0 M (10') hose rather than the "conventional" 3.5 M variety. This becomes irrelevant if the vac is used suspended from the operator's shoulder with the supplied strap. The limitations imposed by its design using the CTL-Sys with most other power tools actually become relative virtues when used with a saw.
The shorter hose combo will provide similar extraction performance to larger & more powerful extractors & will be far superior to the rather mediocre performance of a dustbag.