(( IC-ly, it's what Kohran argued for, but based on the feedback she got, sharing seems to lead to conflict. I don't believe CR will be hindered as (1) the Workshop is still open to all, and (2) Lacus and Dean invite people to work (and even hold classes iirc) at the Garage.
By having tools at both places, it will be more convenient for characters to work on projects, without having to figure out OOC-ly if the tools are at either place (which would be most likely handwaved).
Besides, it won't stop others from borrowing tools to work with in their own homes or elsewhere. More CR to be had! ))