If you found something that works, don't change it. The only reason I'm going to play with Kellogg Palm & Cactus potting mix is to see if the medium could be cheaper and more easily available to people (big-box stores). Otherwise, I'd just keep using what I use. It's predictable.
I was just looking at the cactus mix in the garage. It looks to me like it would work straight out of the bag. But, I'll probably add 20% perlite. I'm thinking about adding some Kellogg Patio Plus potting mix. That's more woody and peat-based. I think that might make a good texture. (But, I want to keep it simple so someone who might want to try growing doesn't have buy much to get started.).
The way I grow, I don't have a rich soil with nutrients in it. So, I think this cactus mix would be good as just a (light) soil medium. It's sandy. Has a lot of perlite (compared to the Kellogg Patio Plus which I use with HP Pro-Mix). I bought a bag last week. I remember a few years ago one was torn open at the tore and I immeiately thought "that's perfect!" I still have that feeling about it, looking at it again today for the first time. It's more sandy/pumice than woody/foresty.
I've googled can't find anyone else has tried to use it. That makes me think it must be a bad idea. It's hard to believe someone hasn't already had this idea.