No.
First of, slide can be tech rolled. There is no vortex coming from that at all.
Second, in order to even set up a meterless vortex, u have to end in a hard knock down, like ice grab or u3.
The one I came up with is the one most people are using and the its the one that has the most success.
F3/B1u3, u3x2, 2 slide, u3, dash. If timed right, it goes crosses the opponent up, making them have to reverse input for a wakeup. This version also does more damage than the one you mentioned and sets up a hard knock down. On top of that, b1 slide is a good option after this because it beats most wakeups in the game.
I also like doing
GGA 16 Bit's hard knockdown set up with ice grab. She doesn't get the otg slide anymore, but she can still put up some crazy oki games such with it.