They’re likely the exact same, just different colors for the linear and tactile variants.
IMO, the tactility was disappointing. To make the most of it you could put a two-stage long spring in it and that could make it a bit more tactile, almost like a Holy Panda.
But I also think the stems will be great alternatives to Halo stems since they feel the same at least to me (and maybe smoother if Holy Panda’s scratch is partially because of Halo stems???), and the tactile Blue velvets are cheaper than Halos.