Unions toe ratchet being difficult to release does not translate into holding better. The locking teeth are on an independent pin within the ratchet housing. Their ability to hold the ladder has nothing to do with the way the rest of the mechanism pressures it to release. Their is NO benefit to its design and to be completely honest it's a dated racthet mechanism. Do it the way Burton/Flux do it, or use the industry standard, a 3 pin with a release lever. No reason not to.
That thing I do to escape the world and have fun with my friend