Do not use any beam spring keyboard in a mission-critical environment.
I can say this is the first time I've seen this in the sales description for a keyboard. Are these assembled from NOS parts?
I have a rare board with Blue Alps switches, from when most keyboards were mechanical; it's definitely very clicky and tactile, but I rarely use it because I can type much faster on a generic low-profile one with soft and cushy rubber domes.
If you mean to say you have to assemble but you get support/replacements if that doesn't work out then that would be a lot better to put than the current text.