That type of brake release was SOP for years with centerpull and canti brakes. It was essentially outlawed by the US CPSC back around 1970 because so many people would forget to reset them and end up brakeless.
The CPSC mandate called for releases that would not affect the function of the brakes when left open. The modern systems built into the lever reflect that mandate.
Of course, using the "release" as a parking brake meets the requirement.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.