the Wellgo quick release unit measures almost the same as the MKS, the MKS release is around 17mm high, while the Wellgo is around 15.5mm.
The wellgo can probably be as close as 14.5, i have layered several washers inserted to position the release latch in the spot.
The nice thing with the wellgo is that it doesn't need the special thin wrench in order to remove or tighten. it uses an 8mm hex allen key to remove or install.