If I was a commercial tradesperson, I'd buy one in a heart beat. The specs. are excellent, and being able to power a corded, half-stationary tool, or other high-powered tools + full size L or M rated dust extractor - is incredible. Just thinking of our underground garage, that has only one really crappy and somewhat dangerous outlet, anyone working in/on it "down" to the janitor would be well off having the SYS-PST 1500.
Personally, looking at this option, I think it beats having high power battery tools + a battery powered full size extractor (which are still rather special/ not wide spread and available only from few manufacturers)
With this, you can really spare you the battery powered half-stationary tools + battery powered full size extractor (which combined won't be too far off, price wise) and just use the tools you are used to.
I love it!
Personally, from a private user perspective, I will have a hard time to justify the price, for a "power bank" that will sit idle most of the time and would only be used for minor stuff, that I could find other solutions for. However, if I was back at the beginning of my endeavor into "DIY" - I'd also get one in a heart beat. This would have made a lot of things easier to deal with.
Again, I love it. & Well done, Festool!
Kind regards,
Oliver