I was also on this quest, there are some decent alternatives.
Personally I went with a Karcher WD5/P with tool activated option. Overall its a decent vacuum but a good alternative to the more expensive european versions.
What is does well, activate when tool is used. Good mobility, good accessories, cheap enough filters, variable power and reduced noise.
What it is lacking, smaller diameter hose, not a very good hose (easy enough to switch out tho), overall power compared to a similarly priced Ridgid, and the "semi auto" filter clogs relatively fast even with constant filter bumps.
* do your research on "auto" filter cleaning, this one features "semi auto" meaning you have to manually activate the filter agitator to clean it with a button/lever press. It does a just OK job, but its a small filter and clogs easily regardless.
Other (nicer+more $) vacuums feature fully automatic filter cleaning that are superb compared to this. Some even have advanced filter cleaning that switches between two and you never notice loss of power, etc...
I bought mine for $125 ish, I see now they are much more $200+? Personally I wouldnt spend more than what I paid.
https://www.amazon.com/gp/product/B01BL7J5M4/?tag=atomicindus08-20
The other option is similar to signcrafter option, FastCap offers a wireless remote that connects via velcro. Im considering going to a Ridgid w/ more power and warranty and this for my cordless tools...
Hope this helps.