Yes, I personally use the Hovi Mic tips from these guys in two different buckets, seen in my Helmet Electronics thread.
I purchased a voice modifier kit that came with the Hovi mics from this same company last year. The modifier was completely different from what you've posted John..
Bottom line I didn't like the modifier and ditched it and went with a ROM/FX instead, also referenced in my build. Love the mics, as mentioned I purchased a 2nd set and recommend them if people are interested.