Drastically different finish. I'd say imagine deconstructing all the different color elements in Caliente - the plum, the red, the gold, the bronze and instead picture them as a constantly shifting range of color blended into a sheer finish. It's like a custom car paint or those multichrome nail polishes that are getting more common, but also sheer. From some angles, you won't even see a color, maybe just sheerness with a wisp of deepening or a flash of bronze for a moment.
If MAC did an entire collection of just this sort of thing in 8 different colorways, I would lose my ever-loving mind. Single most OMGWTFBBQ moment I've had in makeup since I saw this crazy hot pink with violet shimmer mascara back in the 90's. Haha, I am going bananas here, just thinking about it. Sorry, please excuse my temporary madness.
FYI, I didn't see Venomous Violet, since that's not in-store. In the past, I haven't much cared for the darker SS colors and found them patchy. It sure looks nice from the swatch we have, but I'm not sure if I want to buy before trying and go through the stalking frenzy for it. I'd say if you were going to try one, Lust Extract might be purple enough to satisfy your purple love.
It's very violet fuchsia, reminds me of a pinker Riri Boy, but very glowing.