One reason why people want Halo is to put the stems into other switches' housings and make Holy Panda and Holy Chickie switches. Massdrop/Drop has also sold ready-made Holy Panda switches.
You also can't use O-rings with BOX switches such as the Hako.
Where for the love of god Can I find either halo trues or clears other than massdrop
Input Club once had a partnership with Massdrop when developing the K-Type keyboard, which included the Halo switches. Input Club did the engineering of the keyboard and Massdrop provided money and connections. Then they had a falling-out.
This means that Massdrop owns it and Halo switches are not available through Input Club.
Input Club then developed the Hako switch as a replacement.
BTW, the Massdrop CTRL keyboard is the same as Input Club K-Type, but unlike the switches (which are both manufactured by Kailh), the keyboard is open hardware available for anyone to manufacture if they wish to.